78774850974 has 16 divisors (see below), whose sum is σ = 157555415808. Its totient is φ = 26257331352.

The previous prime is 78774850963. The next prime is 78774851009. The reversal of 78774850974 is 47905847787.

It is a Curzon number.

It is a congruent number.

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, 47062 + ... + 399705.

It is an arithmetic number, because the mean of its divisors is an integer number (9847213488).

Almost surely, 2^78774850974 is an apocalyptic number.

78774850974 is an abundant number, since it is smaller than the sum of its proper divisors (78780564834).

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

78774850974 is a wasteful number, since it uses less digits than its factorization.

78774850974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476159.

The product of its (nonzero) digits is 110638080, while the sum is 66.

The spelling of 78774850974 in words is "seventy-eight billion, seven hundred seventy-four million, eight hundred fifty thousand, nine hundred seventy-four".