20522953292657 has 2 divisors, whose sum is σ = 20522953292658. Its totient is φ = 20522953292656.

The previous prime is 20522953292651. The next prime is 20522953292741. The reversal of 20522953292657 is 75629235922502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20391718086961 + 131235205696 = 4515719^2 + 362264^2 .

It is a cyclic number.

It is not a de Polignac number, because 20522953292657 - 2³⁶ = 20454233815921 is a prime.

It is a super-2 number, since 2×20522953292657² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20522953292596 and 20522953292605.

It is not a weakly prime, because it can be changed into another prime (20522953292651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261476646328 + 10261476646329.

It is an arithmetic number, because the mean of its divisors is an integer number (10261476646329).

Almost surely, 2^{20522953292657} is an apocalyptic number.

It is an amenable number.

20522953292657 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522953292657 is an equidigital number, since it uses as much as digits as its factorization.

20522953292657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824000, while the sum is 59.

The spelling of 20522953292657 in words is "twenty trillion, five hundred twenty-two billion, nine hundred fifty-three million, two hundred ninety-two thousand, six hundred fifty-seven".