75684045621 has 16 divisors (see below), whose sum is σ = 104121609984. Its totient is φ = 48873391104.

The previous prime is 75684045601. The next prime is 75684045623. The reversal of 75684045621 is 12654048657.

It is not a de Polignac number, because 75684045621 - 2¹⁴ = 75684029237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75684045623) 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, 2753160 + ... + 2780513.

It is an arithmetic number, because the mean of its divisors is an integer number (6507600624).

Almost surely, 2^75684045621 is an apocalyptic number.

It is an amenable number.

75684045621 is a deficient number, since it is larger than the sum of its proper divisors (28437564363).

75684045621 is a wasteful number, since it uses less digits than its factorization.

75684045621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533820.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 75684045621 in words is "seventy-five billion, six hundred eighty-four million, forty-five thousand, six hundred twenty-one".