102556439400 has 48 divisors (see below), whose sum is σ = 317924964000. Its totient is φ = 27348383680.

The previous prime is 102556439389. The next prime is 102556439407. The reversal of 102556439400 is 4934655201.

It is not an unprimeable number, because it can be changed into a prime (102556439407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85463100 + ... + 85464299.

It is an arithmetic number, because the mean of its divisors is an integer number (6623436750).

Almost surely, 2^102556439400 is an apocalyptic number.

102556439400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102556439400 is an abundant number, since it is smaller than the sum of its proper divisors (215368524600).

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

102556439400 is a wasteful number, since it uses less digits than its factorization.

102556439400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170927418 (or 170927409 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 102556439400 in words is "one hundred two billion, five hundred fifty-six million, four hundred thirty-nine thousand, four hundred".