22555406557 has 16 divisors (see below), whose sum is σ = 24133948272. Its totient is φ = 21005107200.

The previous prime is 22555406551. The next prime is 22555406561. The reversal of 22555406557 is 75560455522.

It can be written as a sum of positive squares in 8 ways, for example, as 775845316 + 21779561241 = 27854^2 + 147579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22555406557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555406551) 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, 3624913 + ... + 3631129.

It is an arithmetic number, because the mean of its divisors is an integer number (1508371767).

Almost surely, 2^22555406557 is an apocalyptic number.

It is an amenable number.

22555406557 is a deficient number, since it is larger than the sum of its proper divisors (1578541715).

22555406557 is a wasteful number, since it uses less digits than its factorization.

22555406557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448.

The product of its (nonzero) digits is 2100000, while the sum is 46.

The spelling of 22555406557 in words is "twenty-two billion, five hundred fifty-five million, four hundred six thousand, five hundred fifty-seven".