74112421155 has 32 divisors (see below), whose sum is σ = 125222423040. Its totient is φ = 37325825280.

The previous prime is 74112421139. The next prime is 74112421177. The reversal of 74112421155 is 55112421147.

It is not a de Polignac number, because 74112421155 - 2⁴ = 74112421139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329442 + ... + 506711.

It is an arithmetic number, because the mean of its divisors is an integer number (3913200720).

Almost surely, 2^74112421155 is an apocalyptic number.

74112421155 is a deficient number, since it is larger than the sum of its proper divisors (51110001885).

74112421155 is a wasteful number, since it uses less digits than its factorization.

74112421155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836491.

The product of its digits is 11200, while the sum is 33.

The spelling of 74112421155 in words is "seventy-four billion, one hundred twelve million, four hundred twenty-one thousand, one hundred fifty-five".