61535025960 has 32 divisors (see below), whose sum is σ = 184605078240. Its totient is φ = 16409340224.

The previous prime is 61535025949. The next prime is 61535025961. The reversal of 61535025960 is 6952053516.

It is not an unprimeable number, because it can be changed into a prime (61535025961) 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, 256395822 + ... + 256396061.

It is an arithmetic number, because the mean of its divisors is an integer number (5768908695).

Almost surely, 2^61535025960 is an apocalyptic number.

61535025960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61535025960 is an abundant number, since it is smaller than the sum of its proper divisors (123070052280).

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

61535025960 is a wasteful number, since it uses less digits than its factorization.

61535025960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512791897 (or 512791893 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 61535025960 in words is "sixty-one billion, five hundred thirty-five million, twenty-five thousand, nine hundred sixty".