81873679300 has 36 divisors (see below), whose sum is σ = 203046726400. Its totient is φ = 28070975520.

The previous prime is 81873679267. The next prime is 81873679313. The reversal of 81873679300 is 397637818.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58480500 + ... + 58481899.

Almost surely, 2^81873679300 is an apocalyptic number.

It is an amenable number.

81873679300 is an abundant number, since it is smaller than the sum of its proper divisors (121173047100).

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

81873679300 is a wasteful number, since it uses less digits than its factorization.

81873679300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116962420 (or 116962413 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 81873679300 in words is "eighty-one billion, eight hundred seventy-three million, six hundred seventy-nine thousand, three hundred".