73587522221 has 4 divisors (see below), whose sum is σ = 73701966912. Its totient is φ = 73473077532.

The previous prime is 73587522193. The next prime is 73587522223. The reversal of 73587522221 is 12222578537.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73587522221 - 2⁶ = 73587522157 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 (73587522223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57221381 + ... + 57222666.

It is an arithmetic number, because the mean of its divisors is an integer number (18425491728).

Almost surely, 2^73587522221 is an apocalyptic number.

It is an amenable number.

73587522221 is a deficient number, since it is larger than the sum of its proper divisors (114444691).

73587522221 is a wasteful number, since it uses less digits than its factorization.

73587522221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114444690.

The product of its digits is 470400, while the sum is 44.

The spelling of 73587522221 in words is "seventy-three billion, five hundred eighty-seven million, five hundred twenty-two thousand, two hundred twenty-one".