74789779135 has 32 divisors (see below), whose sum is σ = 96356736000. Its totient is φ = 55561873536.

The previous prime is 74789779117. The next prime is 74789779157. The reversal of 74789779135 is 53197798747.

It is a cyclic number.

It is not a de Polignac number, because 74789779135 - 2²⁵ = 74756224703 is a prime.

It is a super-2 number, since 2×74789779135² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1007349 + ... + 1079041.

It is an arithmetic number, because the mean of its divisors is an integer number (3011148000).

Almost surely, 2^74789779135 is an apocalyptic number.

74789779135 is a deficient number, since it is larger than the sum of its proper divisors (21566956865).

74789779135 is a wasteful number, since it uses less digits than its factorization.

74789779135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71935.

The product of its digits is 93350880, while the sum is 67.

The spelling of 74789779135 in words is "seventy-four billion, seven hundred eighty-nine million, seven hundred seventy-nine thousand, one hundred thirty-five".