74817981755 has 32 divisors (see below), whose sum is σ = 100825233408. Its totient is φ = 52818998400.

The previous prime is 74817981731. The next prime is 74817981757. The reversal of 74817981755 is 55718971847.

It is not a de Polignac number, because 74817981755 - 2¹⁴ = 74817965371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74817981757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834434 + ... + 919736.

It is an arithmetic number, because the mean of its divisors is an integer number (3150788544).

Almost surely, 2^74817981755 is an apocalyptic number.

74817981755 is a deficient number, since it is larger than the sum of its proper divisors (26007251653).

74817981755 is a wasteful number, since it uses less digits than its factorization.

74817981755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85787.

The product of its digits is 19756800, while the sum is 62.

The spelling of 74817981755 in words is "seventy-four billion, eight hundred seventeen million, nine hundred eighty-one thousand, seven hundred fifty-five".