56535575780 has 24 divisors (see below), whose sum is σ = 124973378880. Its totient is φ = 21424007520.

The previous prime is 56535575771. The next prime is 56535575791. The reversal of 56535575780 is 8757553565.

It is a super-2 number, since 2×56535575780² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74388536 + ... + 74389295.

It is an arithmetic number, because the mean of its divisors is an integer number (5207224120).

Almost surely, 2^56535575780 is an apocalyptic number.

It is an amenable number.

56535575780 is an abundant number, since it is smaller than the sum of its proper divisors (68437803100).

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

56535575780 is a wasteful number, since it uses less digits than its factorization.

56535575780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148777859 (or 148777857 counting only the distinct ones).

The product of its (nonzero) digits is 22050000, while the sum is 56.

The spelling of 56535575780 in words is "fifty-six billion, five hundred thirty-five million, five hundred seventy-five thousand, seven hundred eighty".