Search a number
-
+
3995793607680 = 210345721979131
BaseRepresentation
bin111010001001010111110…
…110111100110000000000
3112010222211201121211110000
4322021113312330300000
51010431341130421210
612255350420240000
7561454330156500
oct72112766746000
915128751554400
103995793607680
111300674359886
125464b3240000
1322ca564c22b4
14db57c821a00
156de16a66ac0
hex3a257dbcc00

3995793607680 has 2640 divisors, whose sum is σ = 17890531084800. Its totient is φ = 847780577280.

The previous prime is 3995793607639. The next prime is 3995793607681. The reversal of 3995793607680 is 867063975993.

3995793607680 is a `hidden beast` number, since 3 + 9 + 9 + 5 + 7 + 9 + 3 + 607 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 3995793607599 and 3995793607608.

It is not an unprimeable number, because it can be changed into a prime (3995793607681) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 30502241215 + ... + 30502241345.

It is an arithmetic number, because the mean of its divisors is an integer number (6776716320).

Almost surely, 23995793607680 is an apocalyptic number.

3995793607680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3995793607680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8945265542400).

3995793607680 is an abundant number, since it is smaller than the sum of its proper divisors (13894737477120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3995793607680 is a wasteful number, since it uses less digits than its factorization.

3995793607680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 462944160, while the sum is 72.

The spelling of 3995793607680 in words is "three trillion, nine hundred ninety-five billion, seven hundred ninety-three million, six hundred seven thousand, six hundred eighty".