61393226756657 has 2 divisors, whose sum is σ = 61393226756658. Its totient is φ = 61393226756656.

The previous prime is 61393226756593. The next prime is 61393226756669. The reversal of 61393226756657 is 75665762239316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33737870681761 + 27655356074896 = 5808431^2 + 5258836^2 .

It is a cyclic number.

It is not a de Polignac number, because 61393226756657 - 2⁶ = 61393226756593 is a prime.

It is not a weakly prime, because it can be changed into another prime (61393226756557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30696613378328 + 30696613378329.

It is an arithmetic number, because the mean of its divisors is an integer number (30696613378329).

Almost surely, 2^{61393226756657} is an apocalyptic number.

It is an amenable number.

61393226756657 is a deficient number, since it is larger than the sum of its proper divisors (1).

61393226756657 is an equidigital number, since it uses as much as digits as its factorization.

61393226756657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 514382400, while the sum is 68.

The spelling of 61393226756657 in words is "sixty-one trillion, three hundred ninety-three billion, two hundred twenty-six million, seven hundred fifty-six thousand, six hundred fifty-seven".