102412520644 has 24 divisors (see below), whose sum is σ = 204962683520. Its totient is φ = 43861585536.

The previous prime is 102412520633. The next prime is 102412520663. The reversal of 102412520644 is 446025214201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186512 + ... + 1269895.

Almost surely, 2^102412520644 is an apocalyptic number.

102412520644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

102412520644 is an abundant number, since it is smaller than the sum of its proper divisors (102550162876).

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

102412520644 is a wasteful number, since it uses less digits than its factorization.

102412520644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457907 (or 2457905 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 102412520644 its reverse (446025214201), we get a palindrome (548437734845).

The spelling of 102412520644 in words is "one hundred two billion, four hundred twelve million, five hundred twenty thousand, six hundred forty-four".