22156075660597 has 2 divisors, whose sum is σ = 22156075660598. Its totient is φ = 22156075660596.

The previous prime is 22156075660577. The next prime is 22156075660633. The reversal of 22156075660597 is 79506657065122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20725884499761 + 1430191160836 = 4552569^2 + 1195906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22156075660597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22156075660577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11078037830298 + 11078037830299.

It is an arithmetic number, because the mean of its divisors is an integer number (11078037830299).

Almost surely, 2^{22156075660597} is an apocalyptic number.

It is an amenable number.

22156075660597 is a deficient number, since it is larger than the sum of its proper divisors (1).

22156075660597 is an equidigital number, since it uses as much as digits as its factorization.

22156075660597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628000, while the sum is 61.

The spelling of 22156075660597 in words is "twenty-two trillion, one hundred fifty-six billion, seventy-five million, six hundred sixty thousand, five hundred ninety-seven".