74777983917 has 32 divisors (see below), whose sum is σ = 122864636160. Its totient is φ = 39394460160.

The previous prime is 74777983913. The next prime is 74777983933. The reversal of 74777983917 is 71938977747.

It is not a de Polignac number, because 74777983917 - 2² = 74777983913 is a prime.

It is a super-2 number, since 2×74777983917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74777983913) 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, 51567 + ... + 390147.

It is an arithmetic number, because the mean of its divisors is an integer number (3839519880).

Almost surely, 2^74777983917 is an apocalyptic number.

It is an amenable number.

74777983917 is a deficient number, since it is larger than the sum of its proper divisors (48086652243).

74777983917 is a wasteful number, since it uses less digits than its factorization.

74777983917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339413.

The product of its digits is 130691232, while the sum is 69.

The spelling of 74777983917 in words is "seventy-four billion, seven hundred seventy-seven million, nine hundred eighty-three thousand, nine hundred seventeen".