74977677947 has 16 divisors (see below), whose sum is σ = 77619690720. Its totient is φ = 72379104000.

The previous prime is 74977677937. The next prime is 74977678049.

74977677947 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 74977677947 - 2¹⁰ = 74977676923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74977677937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2455997 + ... + 2486337.

It is an arithmetic number, because the mean of its divisors is an integer number (4851230670).

Almost surely, 2^74977677947 is an apocalyptic number.

74977677947 is a deficient number, since it is larger than the sum of its proper divisors (2642012773).

74977677947 is a wasteful number, since it uses less digits than its factorization.

74977677947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31054.

The product of its digits is 914838624, while the sum is 74.

The spelling of 74977677947 in words is "seventy-four billion, nine hundred seventy-seven million, six hundred seventy-seven thousand, nine hundred forty-seven".