56398485018 has 16 divisors (see below), whose sum is σ = 112870663776. Its totient is φ = 18787212720.

The previous prime is 56398484999. The next prime is 56398485037. The reversal of 56398485018 is 81058489365.

It is an interprime number because it is at equal distance from previous prime (56398484999) and next prime (56398485037).

It is a super-2 number, since 2×56398485018² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3060621 + ... + 3078992.

It is an arithmetic number, because the mean of its divisors is an integer number (7054416486).

Almost surely, 2^56398485018 is an apocalyptic number.

56398485018 is an abundant number, since it is smaller than the sum of its proper divisors (56472178758).

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

56398485018 is a wasteful number, since it uses less digits than its factorization.

56398485018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141149.

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 56398485018 in words is "fifty-six billion, three hundred ninety-eight million, four hundred eighty-five thousand, eighteen".