78878625312774 has 96 divisors (see below), whose sum is σ = 183889069896960. Its totient is φ = 22490674291008.

The previous prime is 78878625312743. The next prime is 78878625312793. The reversal of 78878625312774 is 47721352687887.

It is a junction number, because it is equal to n+sod(n) for n = 78878625312696 and 78878625312705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315562567 + ... + 315812429.

It is an arithmetic number, because the mean of its divisors is an integer number (1915511144760).

Almost surely, 2^{78878625312774} is an apocalyptic number.

78878625312774 is an abundant number, since it is smaller than the sum of its proper divisors (105010444584186).

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

78878625312774 is a wasteful number, since it uses less digits than its factorization.

78878625312774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252074 (or 252067 counting only the distinct ones).

The product of its digits is 1770209280, while the sum is 75.

The spelling of 78878625312774 in words is "seventy-eight trillion, eight hundred seventy-eight billion, six hundred twenty-five million, three hundred twelve thousand, seven hundred seventy-four".