5156400065 has 16 divisors (see below), whose sum is σ = 6309883200. Its totient is φ = 4044237120.

The previous prime is 5156400059. The next prime is 5156400077. The reversal of 5156400065 is 5600046515.

It is not a de Polignac number, because 5156400065 - 2¹⁴ = 5156383681 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34211 + ... + 107159.

It is an arithmetic number, because the mean of its divisors is an integer number (394367700).

Almost surely, 2^5156400065 is an apocalyptic number.

It is an amenable number.

5156400065 is a deficient number, since it is larger than the sum of its proper divisors (1153483135).

5156400065 is a wasteful number, since it uses less digits than its factorization.

5156400065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73232.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 5156400065 is about 71808.0779926604. The cubic root of 5156400065 is about 1727.6225671408.

The spelling of 5156400065 in words is "five billion, one hundred fifty-six million, four hundred thousand, sixty-five".