74477365812 has 60 divisors (see below), whose sum is σ = 201412314180. Its totient is φ = 23969723904.

The previous prime is 74477365769. The next prime is 74477365813. The reversal of 74477365812 is 21856377447.

It can be written as a sum of positive squares in 2 ways, for example, as 16880245776 + 57597120036 = 129924^2 + 239994^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74477365813) 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 19 ways as a sum of consecutive naturals, for example, 3953853 + ... + 3972644.

It is an arithmetic number, because the mean of its divisors is an integer number (3356871903).

Almost surely, 2^74477365812 is an apocalyptic number.

It is an amenable number.

74477365812 is an abundant number, since it is smaller than the sum of its proper divisors (126934948368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74477365812 is a wasteful number, since it uses less digits than its factorization.

74477365812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926542 (or 7926531 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 54.

The spelling of 74477365812 in words is "seventy-four billion, four hundred seventy-seven million, three hundred sixty-five thousand, eight hundred twelve".