15761356656 has 80 divisors (see below), whose sum is σ = 41517321888. Its totient is φ = 5151052800.

The previous prime is 15761356649. The next prime is 15761356673. The reversal of 15761356656 is 65665316751.

It is a junction number, because it is equal to n+sod(n) for n = 15761356599 and 15761356608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919686 + ... + 936666.

Almost surely, 2^15761356656 is an apocalyptic number.

15761356656 is a gapful number since it is divisible by the number (16) 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 15761356656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20758660944).

15761356656 is an abundant number, since it is smaller than the sum of its proper divisors (25755965232).

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

15761356656 is a wasteful number, since it uses less digits than its factorization.

15761356656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17370 (or 17364 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 51.

The spelling of 15761356656 in words is "fifteen billion, seven hundred sixty-one million, three hundred fifty-six thousand, six hundred fifty-six".