Search a number
-
+
1407387813888 = 21137172966377
BaseRepresentation
bin10100011110101110110…
…110011100100000000000
311222112201021110121220110
4110132232312130200000
5141024312240021023
62554313421111320
7203452245015030
oct24365666344000
94875637417813
101407387813888
114a2962804201
121a89173b8540
13a2940375794
144c1918778c0
1526921a31a93
hex147aed9c800

1407387813888 has 384 divisors, whose sum is σ = 4697013484800. Its totient is φ = 365401473024.

The previous prime is 1407387813877. The next prime is 1407387813929. The reversal of 1407387813888 is 8883187837041.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21169756 + ... + 21236132.

It is an arithmetic number, because the mean of its divisors is an integer number (12231805950).

Almost surely, 21407387813888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1407387813888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2348506742400).

1407387813888 is an abundant number, since it is smaller than the sum of its proper divisors (3289625670912).

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

1407387813888 is a wasteful number, since it uses less digits than its factorization.

1407387813888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66455 (or 66435 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 66.

The spelling of 1407387813888 in words is "one trillion, four hundred seven billion, three hundred eighty-seven million, eight hundred thirteen thousand, eight hundred eighty-eight".