961570657506 has 32 divisors (see below), whose sum is σ = 2073733905600. Its totient is φ = 296247697920.

The previous prime is 961570657423. The next prime is 961570657507. The reversal of 961570657506 is 605756075169.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (961570657507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102859111 + ... + 102868458.

It is an arithmetic number, because the mean of its divisors is an integer number (64804184550).

Almost surely, 2^961570657506 is an apocalyptic number.

961570657506 is an abundant number, since it is smaller than the sum of its proper divisors (1112163248094).

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

961570657506 is a wasteful number, since it uses less digits than its factorization.

961570657506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205727634.

The product of its (nonzero) digits is 11907000, while the sum is 57.

The spelling of 961570657506 in words is "nine hundred sixty-one billion, five hundred seventy million, six hundred fifty-seven thousand, five hundred six".