29993239861656 has 32 divisors (see below), whose sum is σ = 74989109145600. Its totient is φ = 9996945355040.

The previous prime is 29993239861639. The next prime is 29993239861693. The reversal of 29993239861656 is 65616893239992.

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, 49773360 + ... + 50372351.

It is an arithmetic number, because the mean of its divisors is an integer number (2343409660800).

Almost surely, 2^{29993239861656} is an apocalyptic number.

It is an amenable number.

29993239861656 is an abundant number, since it is smaller than the sum of its proper divisors (44995869283944).

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

29993239861656 is a wasteful number, since it uses less digits than its factorization.

29993239861656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100158199 (or 100158195 counting only the distinct ones).

The product of its digits is 2040733440, while the sum is 78.

The spelling of 29993239861656 in words is "twenty-nine trillion, nine hundred ninety-three billion, two hundred thirty-nine million, eight hundred sixty-one thousand, six hundred fifty-six".