65400558608 has 40 divisors (see below), whose sum is σ = 157980573120. Its totient is φ = 25480736640.

The previous prime is 65400558563. The next prime is 65400558637. The reversal of 65400558608 is 80685500456.

It is a happy number.

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, 26541203 + ... + 26543666.

It is an arithmetic number, because the mean of its divisors is an integer number (3949514328).

Almost surely, 2^65400558608 is an apocalyptic number.

It is an amenable number.

65400558608 is an abundant number, since it is smaller than the sum of its proper divisors (92580014512).

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

65400558608 is a wasteful number, since it uses less digits than its factorization.

65400558608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53084895 (or 53084889 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 47.

The spelling of 65400558608 in words is "sixty-five billion, four hundred million, five hundred fifty-eight thousand, six hundred eight".