22765890820557 has 16 divisors (see below), whose sum is σ = 30649913049600. Its totient is φ = 15029571183792.

The previous prime is 22765890820531. The next prime is 22765890820559. The reversal of 22765890820557 is 75502809856722.

It is a de Polignac number, because none of the positive numbers 2^k-22765890820557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22765890820559) 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, 13356694 + ... + 14964392.

It is an arithmetic number, because the mean of its divisors is an integer number (1915619565600).

Almost surely, 2^{22765890820557} is an apocalyptic number.

It is an amenable number.

22765890820557 is a deficient number, since it is larger than the sum of its proper divisors (7884022229043).

22765890820557 is a wasteful number, since it uses less digits than its factorization.

22765890820557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653632.

The product of its (nonzero) digits is 169344000, while the sum is 66.

The spelling of 22765890820557 in words is "twenty-two trillion, seven hundred sixty-five billion, eight hundred ninety million, eight hundred twenty thousand, five hundred fifty-seven".