195624055657 has 2 divisors, whose sum is σ = 195624055658. Its totient is φ = 195624055656.

The previous prime is 195624055621. The next prime is 195624055661. The reversal of 195624055657 is 756550426591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124371896896 + 71252158761 = 352664^2 + 266931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195624055657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195624055598 and 195624055607.

It is not a weakly prime, because it can be changed into another prime (195624055607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97812027828 + 97812027829.

It is an arithmetic number, because the mean of its divisors is an integer number (97812027829).

Almost surely, 2^195624055657 is an apocalyptic number.

It is an amenable number.

195624055657 is a deficient number, since it is larger than the sum of its proper divisors (1).

195624055657 is an equidigital number, since it uses as much as digits as its factorization.

195624055657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340000, while the sum is 55.

The spelling of 195624055657 in words is "one hundred ninety-five billion, six hundred twenty-four million, fifty-five thousand, six hundred fifty-seven".