74186416021 has 16 divisors (see below), whose sum is σ = 76308156288. Its totient is φ = 72080064000.

The previous prime is 74186416013. The next prime is 74186416039. The reversal of 74186416021 is 12061468147.

It is a cyclic number.

It is not a de Polignac number, because 74186416021 - 2³ = 74186416013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74186416321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14684946 + ... + 14689996.

It is an arithmetic number, because the mean of its divisors is an integer number (4769259768).

Almost surely, 2^74186416021 is an apocalyptic number.

It is an amenable number.

74186416021 is a deficient number, since it is larger than the sum of its proper divisors (2121740267).

74186416021 is a wasteful number, since it uses less digits than its factorization.

74186416021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 74186416021 in words is "seventy-four billion, one hundred eighty-six million, four hundred sixteen thousand, twenty-one".