83680788756 has 12 divisors (see below), whose sum is σ = 195255173792. Its totient is φ = 27893596248.

The previous prime is 83680788677. The next prime is 83680788769. The reversal of 83680788756 is 65788708638.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3486699520 + ... + 3486699543.

Almost surely, 2^83680788756 is an apocalyptic number.

It is an amenable number.

83680788756 is an abundant number, since it is smaller than the sum of its proper divisors (111574385036).

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

83680788756 is a wasteful number, since it uses less digits than its factorization.

83680788756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973399070 (or 6973399068 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 66.

The spelling of 83680788756 in words is "eighty-three billion, six hundred eighty million, seven hundred eighty-eight thousand, seven hundred fifty-six".