83121327685758 has 32 divisors (see below), whose sum is σ = 173471683046400. Its totient is φ = 26502286368096.

The previous prime is 83121327685741. The next prime is 83121327685793. The reversal of 83121327685758 is 85758672312138.

It is a happy number.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 15 ways as a sum of consecutive naturals, for example, 21260328 + ... + 24864516.

It is an arithmetic number, because the mean of its divisors is an integer number (5420990095200).

Almost surely, 2^{83121327685758} is an apocalyptic number.

83121327685758 is an abundant number, since it is smaller than the sum of its proper divisors (90350355360642).

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

83121327685758 is a wasteful number, since it uses less digits than its factorization.

83121327685758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771336.

The product of its digits is 135475200, while the sum is 66.

The spelling of 83121327685758 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred twenty-seven million, six hundred eighty-five thousand, seven hundred fifty-eight".