78083666038900 has 18 divisors (see below), whose sum is σ = 169441555304630. Its totient is φ = 31233466415520.

The previous prime is 78083666038843. The next prime is 78083666038919. The reversal of 78083666038900 is 983066638087.

It can be written as a sum of positive squares in 3 ways, for example, as 14315583556836 + 63768082482064 = 3783594^2 + 7985492^2 .

It is a super-3 number, since 3×78083666038900³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 390418330095 + ... + 390418330294.

Almost surely, 2^{78083666038900} is an apocalyptic number.

It is an amenable number.

78083666038900 is an abundant number, since it is smaller than the sum of its proper divisors (91357889265730).

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

78083666038900 is a wasteful number, since it uses less digits than its factorization.

78083666038900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780836660403 (or 780836660396 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 78083666038900 in words is "seventy-eight trillion, eighty-three billion, six hundred sixty-six million, thirty-eight thousand, nine hundred".