30716721894 has 16 divisors (see below), whose sum is σ = 61466727168. Its totient is φ = 10233360072.

The previous prime is 30716721863. The next prime is 30716721941. The reversal of 30716721894 is 49812761703.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374802 + ... + 1396965.

It is an arithmetic number, because the mean of its divisors is an integer number (3841670448).

Almost surely, 2^30716721894 is an apocalyptic number.

30716721894 is an abundant number, since it is smaller than the sum of its proper divisors (30750005274).

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

30716721894 is a wasteful number, since it uses less digits than its factorization.

30716721894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773619.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 30716721894 in words is "thirty billion, seven hundred sixteen million, seven hundred twenty-one thousand, eight hundred ninety-four".