30638657064 has 32 divisors (see below), whose sum is σ = 79237908000. Its totient is φ = 9860716992.

The previous prime is 30638657053. The next prime is 30638657069. The reversal of 30638657064 is 46075683603.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 22009834 + ... + 22011225.

It is an arithmetic number, because the mean of its divisors is an integer number (2476184625).

Almost surely, 2^30638657064 is an apocalyptic number.

It is an amenable number.

30638657064 is an abundant number, since it is smaller than the sum of its proper divisors (48599250936).

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

30638657064 is a wasteful number, since it uses less digits than its factorization.

30638657064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44021097 (or 44021093 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 30638657064 in words is "thirty billion, six hundred thirty-eight million, six hundred fifty-seven thousand, sixty-four".