102878399825408 has 20 divisors (see below), whose sum is σ = 205555865277180. Its totient is φ = 51439199912448.

The previous prime is 102878399825347. The next prime is 102878399825417. The reversal of 102878399825408 is 804528993878201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100467186818 + ... + 100467187841.

It is an arithmetic number, because the mean of its divisors is an integer number (10277793263859).

Almost surely, 2^{102878399825408} is an apocalyptic number.

It is an amenable number.

102878399825408 is a deficient number, since it is larger than the sum of its proper divisors (102677465451772).

102878399825408 is an frugal number, since it uses more digits than its factorization.

102878399825408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200934374677 (or 200934374661 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 74.

The spelling of 102878399825408 in words is "one hundred two trillion, eight hundred seventy-eight billion, three hundred ninety-nine million, eight hundred twenty-five thousand, four hundred eight".