102010999972 has 24 divisors (see below), whose sum is σ = 205079119616. Its totient is φ = 43492474368.

The previous prime is 102010999967. The next prime is 102010999973. The reversal of 102010999972 is 279999010201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102010999973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9433068 + ... + 9443875.

Almost surely, 2^102010999972 is an apocalyptic number.

It is an amenable number.

102010999972 is an abundant number, since it is smaller than the sum of its proper divisors (103068119644).

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

102010999972 is a wasteful number, since it uses less digits than its factorization.

102010999972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18877147 (or 18877145 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 49.

The spelling of 102010999972 in words is "one hundred two billion, ten million, nine hundred ninety-nine thousand, nine hundred seventy-two".