22537541521 has 8 divisors (see below), whose sum is σ = 24602961024. Its totient is φ = 20474880720.

The previous prime is 22537541519. The next prime is 22537541557. The reversal of 22537541521 is 12514573522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22537541521 - 2¹ = 22537541519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22537541501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672570 + ... + 705283.

It is an arithmetic number, because the mean of its divisors is an integer number (3075370128).

Almost surely, 2^22537541521 is an apocalyptic number.

It is an amenable number.

22537541521 is a deficient number, since it is larger than the sum of its proper divisors (2065419503).

22537541521 is a wasteful number, since it uses less digits than its factorization.

22537541521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379351.

The product of its digits is 84000, while the sum is 37.

The spelling of 22537541521 in words is "twenty-two billion, five hundred thirty-seven million, five hundred forty-one thousand, five hundred twenty-one".