Search a number
-
+
2660800438480 = 245166911992691
BaseRepresentation
bin100110101110000100000…
…100001010000011010000
3100102100222202110012101011
4212232010010022003100
5322043304403012410
65354204351420304
7363144054361462
oct46560404120320
910370882405334
102660800438480
11936491531748
1236b820824694
13163bb27263a2
1492ad7a28132
15493309b018a
hex26b8410a0d0

2660800438480 has 40 divisors (see below), whose sum is σ = 6186734764704. Its totient is φ = 1064255875200.

The previous prime is 2660800438411. The next prime is 2660800438481. The reversal of 2660800438480 is 848340080662.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660800438481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338935 + ... + 2331625.

Almost surely, 22660800438480 is an apocalyptic number.

2660800438480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660800438480 is an abundant number, since it is smaller than the sum of its proper divisors (3525934326224).

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

2660800438480 is a wasteful number, since it uses less digits than its factorization.

2660800438480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009395 (or 2009389 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 2660800438480 in words is "two trillion, six hundred sixty billion, eight hundred million, four hundred thirty-eight thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 16691 33382 66764 83455 133528 166910 267056 333820 667640 1335280 1992691 3985382 7970764 9963455 15941528 19926910 31883056 39853820 79707640 159415280 33260005481 66520010962 133040021924 166300027405 266080043848 332600054810 532160087696 665200109620 1330400219240 2660800438480