74426646872 has 64 divisors (see below), whose sum is σ = 142436620800. Its totient is φ = 36451296000.

The previous prime is 74426646823. The next prime is 74426646919. The reversal of 74426646872 is 27864662447.

It is a happy number.

Its product of digits (21676032) is a multiple of the sum of its prime factors (1728).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100712279 + ... + 100713017.

It is an arithmetic number, because the mean of its divisors is an integer number (2225572200).

Almost surely, 2^74426646872 is an apocalyptic number.

It is an amenable number.

74426646872 is a deficient number, since it is larger than the sum of its proper divisors (68009973928).

74426646872 is a wasteful number, since it uses less digits than its factorization.

74426646872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1724 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 56.

The spelling of 74426646872 in words is "seventy-four billion, four hundred twenty-six million, six hundred forty-six thousand, eight hundred seventy-two".