74664056438 has 16 divisors (see below), whose sum is σ = 113952000960. Its totient is φ = 36680697096.

The previous prime is 74664056431. The next prime is 74664056447. The reversal of 74664056438 is 83465046647.

It is a self number, because there is not a number n which added to its sum of digits gives 74664056438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74664056431) 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 7 ways as a sum of consecutive naturals, for example, 75245 + ... + 393687.

It is an arithmetic number, because the mean of its divisors is an integer number (7122000060).

Almost surely, 2^74664056438 is an apocalyptic number.

74664056438 is a deficient number, since it is larger than the sum of its proper divisors (39287944522).

74664056438 is a wasteful number, since it uses less digits than its factorization.

74664056438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320491.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 74664056438 in words is "seventy-four billion, six hundred sixty-four million, fifty-six thousand, four hundred thirty-eight".