102905991486 has 32 divisors (see below), whose sum is σ = 230325177600. Its totient is φ = 34055217720.

The previous prime is 102905991457. The next prime is 102905991491. The reversal of 102905991486 is 684199509201.

102905991486 is a `hidden beast` number, since 1 + 0 + 2 + 9 + 0 + 599 + 1 + 48 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon 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, 6847410 + ... + 6862421.

It is an arithmetic number, because the mean of its divisors is an integer number (7197661800).

Almost surely, 2^102905991486 is an apocalyptic number.

102905991486 is an abundant number, since it is smaller than the sum of its proper divisors (127419186114).

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

102905991486 is a wasteful number, since it uses less digits than its factorization.

102905991486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13709981 (or 13709975 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 102905991486 in words is "one hundred two billion, nine hundred five million, nine hundred ninety-one thousand, four hundred eighty-six".