30638657065 has 16 divisors (see below), whose sum is σ = 38933250048. Its totient is φ = 23066657536.

The previous prime is 30638657053. The next prime is 30638657069. The reversal of 30638657065 is 56075683603.

It is not a de Polignac number, because 30638657065 - 2⁵ = 30638657033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30638657069) 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, 1414104 + ... + 1435606.

It is an arithmetic number, because the mean of its divisors is an integer number (2433328128).

Almost surely, 2^30638657065 is an apocalyptic number.

It is an amenable number.

30638657065 is a deficient number, since it is larger than the sum of its proper divisors (8294592983).

30638657065 is a wasteful number, since it uses less digits than its factorization.

30638657065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38288.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 30638657065 in words is "thirty billion, six hundred thirty-eight million, six hundred fifty-seven thousand, sixty-five".