74408921616 has 40 divisors (see below), whose sum is σ = 193924150560. Its totient is φ = 24583476736.

The previous prime is 74408921603. The next prime is 74408921623. The reversal of 74408921616 is 61612980447.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 6853806 + ... + 6864653.

It is an arithmetic number, because the mean of its divisors is an integer number (4848103764).

Almost surely, 2^74408921616 is an apocalyptic number.

It is an amenable number.

74408921616 is an abundant number, since it is smaller than the sum of its proper divisors (119515228944).

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

74408921616 is a wasteful number, since it uses less digits than its factorization.

74408921616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13718583 (or 13718577 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 74408921616 in words is "seventy-four billion, four hundred eight million, nine hundred twenty-one thousand, six hundred sixteen".