75804613621 has 16 divisors (see below), whose sum is σ = 83223201600. Its totient is φ = 68474810880.

The previous prime is 75804613579. The next prime is 75804613649. The reversal of 75804613621 is 12631640857.

It is a cyclic number.

It is not a de Polignac number, because 75804613621 - 2²³ = 75796225013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75804613121) 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, 1683205 + ... + 1727653.

It is an arithmetic number, because the mean of its divisors is an integer number (5201450100).

Almost surely, 2^75804613621 is an apocalyptic number.

It is an amenable number.

75804613621 is a deficient number, since it is larger than the sum of its proper divisors (7418587979).

75804613621 is a wasteful number, since it uses less digits than its factorization.

75804613621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45444.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 75804613621 in words is "seventy-five billion, eight hundred four million, six hundred thirteen thousand, six hundred twenty-one".