81514267100 has 72 divisors (see below), whose sum is σ = 207619107360. Its totient is φ = 27192395520.

The previous prime is 81514267031. The next prime is 81514267111. The reversal of 81514267100 is 176241518.

It is a super-3 number, since 3×81514267100³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 23 ways as a sum of consecutive naturals, for example, 1547735 + ... + 1599534.

Almost surely, 2^81514267100 is an apocalyptic number.

It is an amenable number.

81514267100 is an abundant number, since it is smaller than the sum of its proper divisors (126104840260).

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

81514267100 is a wasteful number, since it uses less digits than its factorization.

81514267100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147327 (or 3147320 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 81514267100 in words is "eighty-one billion, five hundred fourteen million, two hundred sixty-seven thousand, one hundred".