22165531057 has 2 divisors, whose sum is σ = 22165531058. Its totient is φ = 22165531056.

The previous prime is 22165531049. The next prime is 22165531117. The reversal of 22165531057 is 75013556122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17224987536 + 4940543521 = 131244^2 + 70289^2 .

It is a cyclic number.

It is not a de Polignac number, because 22165531057 - 2³ = 22165531049 is a prime.

It is not a weakly prime, because it can be changed into another prime (22165531657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11082765528 + 11082765529.

It is an arithmetic number, because the mean of its divisors is an integer number (11082765529).

Almost surely, 2^22165531057 is an apocalyptic number.

It is an amenable number.

22165531057 is a deficient number, since it is larger than the sum of its proper divisors (1).

22165531057 is an equidigital number, since it uses as much as digits as its factorization.

22165531057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 22165531057 in words is "twenty-two billion, one hundred sixty-five million, five hundred thirty-one thousand, fifty-seven".