157651618968497 has 2 divisors, whose sum is σ = 157651618968498. Its totient is φ = 157651618968496.

The previous prime is 157651618968449. The next prime is 157651618968509. The reversal of 157651618968497 is 794869816156751.

It is a happy number.

157651618968497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152428753209616 + 5222865758881 = 12346204^2 + 2285359^2 .

It is a cyclic number.

It is not a de Polignac number, because 157651618968497 - 2³⁶ = 157582899491761 is a prime.

It is not a weakly prime, because it can be changed into another prime (157651618928497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78825809484248 + 78825809484249.

It is an arithmetic number, because the mean of its divisors is an integer number (78825809484249).

Almost surely, 2^{157651618968497} is an apocalyptic number.

It is an amenable number.

157651618968497 is a deficient number, since it is larger than the sum of its proper divisors (1).

157651618968497 is an equidigital number, since it uses as much as digits as its factorization.

157651618968497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5486745600, while the sum is 83.

The spelling of 157651618968497 in words is "one hundred fifty-seven trillion, six hundred fifty-one billion, six hundred eighteen million, nine hundred sixty-eight thousand, four hundred ninety-seven".