22152066557 has 4 divisors (see below), whose sum is σ = 22152465600. Its totient is φ = 22151667516.

The previous prime is 22152066509. The next prime is 22152066593. The reversal of 22152066557 is 75566025122.

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 22152066557 - 2⁶ = 22152066493 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 (22152086557) 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, 99557 + ... + 232842.

It is an arithmetic number, because the mean of its divisors is an integer number (5538116400).

Almost surely, 2^22152066557 is an apocalyptic number.

It is an amenable number.

22152066557 is a deficient number, since it is larger than the sum of its proper divisors (399043).

22152066557 is an equidigital number, since it uses as much as digits as its factorization.

22152066557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399042.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 22152066557 in words is "twenty-two billion, one hundred fifty-two million, sixty-six thousand, five hundred fifty-seven".