56540929987 has 2 divisors, whose sum is σ = 56540929988. Its totient is φ = 56540929986.

The previous prime is 56540929979. The next prime is 56540930029. The reversal of 56540929987 is 78992904565.

56540929987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56540929987 - 2³ = 56540929979 is a prime.

It is not a weakly prime, because it can be changed into another prime (56540929937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28270464993 + 28270464994.

It is an arithmetic number, because the mean of its divisors is an integer number (28270464994).

Almost surely, 2^56540929987 is an apocalyptic number.

56540929987 is a deficient number, since it is larger than the sum of its proper divisors (1).

56540929987 is an equidigital number, since it uses as much as digits as its factorization.

56540929987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 56540929987 in words is "fifty-six billion, five hundred forty million, nine hundred twenty-nine thousand, nine hundred eighty-seven".