646072035137 has 16 divisors (see below), whose sum is σ = 720112498560. Its totient is φ = 576038460672.

The previous prime is 646072035113. The next prime is 646072035139. The reversal of 646072035137 is 731530270646.

646072035137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 646072035137 - 2³⁶ = 577352558401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646072035139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14064068 + ... + 14109930.

It is an arithmetic number, because the mean of its divisors is an integer number (45007031160).

Almost surely, 2^646072035137 is an apocalyptic number.

It is an amenable number.

646072035137 is a deficient number, since it is larger than the sum of its proper divisors (74040463423).

646072035137 is a wasteful number, since it uses less digits than its factorization.

646072035137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89512.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 646072035137 in words is "six hundred forty-six billion, seventy-two million, thirty-five thousand, one hundred thirty-seven".