10561731516 has 72 divisors (see below), whose sum is σ = 30897950720. Its totient is φ = 2979434016.

The previous prime is 10561731493. The next prime is 10561731517. The reversal of 10561731516 is 61513716501.

10561731516 is a `hidden beast` number, since 1 + 0 + 5 + 617 + 31 + 5 + 1 + 6 = 666.

It is a super-2 number, since 2×10561731516² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561731517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245356 + ... + 285171.

Almost surely, 2^10561731516 is an apocalyptic number.

It is an amenable number.

10561731516 is an abundant number, since it is smaller than the sum of its proper divisors (20336219204).

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

10561731516 is a wasteful number, since it uses less digits than its factorization.

10561731516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530623 (or 530618 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The spelling of 10561731516 in words is "ten billion, five hundred sixty-one million, seven hundred thirty-one thousand, five hundred sixteen".