74977394737 has 6 divisors (see below), whose sum is σ = 87218602098. Its totient is φ = 64266338304.

The previous prime is 74977394707. The next prime is 74977394819. The reversal of 74977394737 is 73749377947.

It can be written as a sum of positive squares in only one way, i.e., 45307676736 + 29669718001 = 212856^2 + 172249^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74977394737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74977394707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765075408 + ... + 765075505.

It is an arithmetic number, because the mean of its divisors is an integer number (14536433683).

Almost surely, 2^74977394737 is an apocalyptic number.

It is an amenable number.

74977394737 is a deficient number, since it is larger than the sum of its proper divisors (12241207361).

74977394737 is a wasteful number, since it uses less digits than its factorization.

74977394737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530150927 (or 1530150920 counting only the distinct ones).

The product of its digits is 196036848, while the sum is 67.

The spelling of 74977394737 in words is "seventy-four billion, nine hundred seventy-seven million, three hundred ninety-four thousand, seven hundred thirty-seven".