157570557497 has 2 divisors, whose sum is σ = 157570557498. Its totient is φ = 157570557496.

The previous prime is 157570557481. The next prime is 157570557523. The reversal of 157570557497 is 794755075751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141222633616 + 16347923881 = 375796^2 + 127859^2 .

It is a cyclic number.

It is not a de Polignac number, because 157570557497 - 2⁴ = 157570557481 is a prime.

It is not a weakly prime, because it can be changed into another prime (157570557437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78785278748 + 78785278749.

It is an arithmetic number, because the mean of its divisors is an integer number (78785278749).

Almost surely, 2^157570557497 is an apocalyptic number.

It is an amenable number.

157570557497 is a deficient number, since it is larger than the sum of its proper divisors (1).

157570557497 is an equidigital number, since it uses as much as digits as its factorization.

157570557497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54022500, while the sum is 62.

The spelling of 157570557497 in words is "one hundred fifty-seven billion, five hundred seventy million, five hundred fifty-seven thousand, four hundred ninety-seven".