56561001064 has 32 divisors (see below), whose sum is σ = 106840440000. Its totient is φ = 28070900352.

The previous prime is 56561001061. The next prime is 56561001073. The reversal of 56561001064 is 46010016565.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56561001061) 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, 624652 + ... + 709444.

It is an arithmetic number, because the mean of its divisors is an integer number (3338763750).

Almost surely, 2^56561001064 is an apocalyptic number.

It is an amenable number.

56561001064 is a deficient number, since it is larger than the sum of its proper divisors (50279438936).

56561001064 is a wasteful number, since it uses less digits than its factorization.

56561001064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85417 (or 85413 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 56561001064 in words is "fifty-six billion, five hundred sixty-one million, one thousand, sixty-four".