56515510010 has 16 divisors (see below), whose sum is σ = 105235777800. Its totient is φ = 21826679616.

The previous prime is 56515509949. The next prime is 56515510019. The reversal of 56515510010 is 1001551565.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54913829569 + 1601680441 = 234337^2 + 40021^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (56515510019) 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, 97440245 + ... + 97440824.

Almost surely, 2^56515510010 is an apocalyptic number.

56515510010 is a deficient number, since it is larger than the sum of its proper divisors (48720267790).

56515510010 is a wasteful number, since it uses less digits than its factorization.

56515510010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194881105.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 56515510010 in words is "fifty-six billion, five hundred fifteen million, five hundred ten thousand, ten".