10561515942 has 16 divisors (see below), whose sum is σ = 21128970240. Its totient is φ = 3519515592.

The previous prime is 10561515919. The next prime is 10561515947. The reversal of 10561515942 is 24951516501.

It is a super-2 number, since 2×10561515942² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10561515942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561515947) 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, 224142 + ... + 267137.

It is an arithmetic number, because the mean of its divisors is an integer number (1320560640).

Almost surely, 2^10561515942 is an apocalyptic number.

10561515942 is an abundant number, since it is smaller than the sum of its proper divisors (10567454298).

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

10561515942 is a wasteful number, since it uses less digits than its factorization.

10561515942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494867.

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 10561515942 in words is "ten billion, five hundred sixty-one million, five hundred fifteen thousand, nine hundred forty-two".