29971856590 has 16 divisors (see below), whose sum is σ = 58099291488. Its totient is φ = 11066531616.

The previous prime is 29971856569. The next prime is 29971856609. The reversal of 29971856590 is 9565817992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115276242 + ... + 115276501.

It is an arithmetic number, because the mean of its divisors is an integer number (3631205718).

Almost surely, 2^29971856590 is an apocalyptic number.

29971856590 is a deficient number, since it is larger than the sum of its proper divisors (28127434898).

29971856590 is a wasteful number, since it uses less digits than its factorization.

29971856590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230552763.

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 29971856590 in words is "twenty-nine billion, nine hundred seventy-one million, eight hundred fifty-six thousand, five hundred ninety".