22265693557 has 2 divisors, whose sum is σ = 22265693558. Its totient is φ = 22265693556.

The previous prime is 22265693551. The next prime is 22265693591. The reversal of 22265693557 is 75539656222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18641533156 + 3624160401 = 136534^2 + 60201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22265693557 is a prime.

It is a super-2 number, since 2×22265693557² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22265693551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11132846778 + 11132846779.

It is an arithmetic number, because the mean of its divisors is an integer number (11132846779).

Almost surely, 2^22265693557 is an apocalyptic number.

It is an amenable number.

22265693557 is a deficient number, since it is larger than the sum of its proper divisors (1).

22265693557 is an equidigital number, since it uses as much as digits as its factorization.

22265693557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804000, while the sum is 52.

The spelling of 22265693557 in words is "twenty-two billion, two hundred sixty-five million, six hundred ninety-three thousand, five hundred fifty-seven".