102556439399 has 8 divisors (see below), whose sum is σ = 103676760000. Its totient is φ = 101441879392.

The previous prime is 102556439389. The next prime is 102556439407. The reversal of 102556439399 is 993934655201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102556439399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102556439389) 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, 1404344 + ... + 1475565.

It is an arithmetic number, because the mean of its divisors is an integer number (12959595000).

Almost surely, 2^102556439399 is an apocalyptic number.

102556439399 is a deficient number, since it is larger than the sum of its proper divisors (1120320601).

102556439399 is a wasteful number, since it uses less digits than its factorization.

102556439399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880297.

The product of its (nonzero) digits is 7873200, while the sum is 56.

The spelling of 102556439399 in words is "one hundred two billion, five hundred fifty-six million, four hundred thirty-nine thousand, three hundred ninety-nine".