74151851856 has 20 divisors (see below), whose sum is σ = 191558950752. Its totient is φ = 24717283936.

The previous prime is 74151851849. The next prime is 74151851899. The reversal of 74151851856 is 65815815147.

It is a junction number, because it is equal to n+sod(n) for n = 74151851799 and 74151851808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772415076 + ... + 772415171.

Almost surely, 2^74151851856 is an apocalyptic number.

It is an amenable number.

74151851856 is an abundant number, since it is smaller than the sum of its proper divisors (117407098896).

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

74151851856 is a wasteful number, since it uses less digits than its factorization.

74151851856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544830258 (or 1544830252 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 51.

The spelling of 74151851856 in words is "seventy-four billion, one hundred fifty-one million, eight hundred fifty-one thousand, eight hundred fifty-six".