157857023089 has 2 divisors, whose sum is σ = 157857023090. Its totient is φ = 157857023088.

The previous prime is 157857023003. The next prime is 157857023153. The reversal of 157857023089 is 980320758751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154423063089 + 3433960000 = 392967^2 + 58600^2 .

It is a cyclic number.

It is not a de Polignac number, because 157857023089 - 2⁹ = 157857022577 is a prime.

It is not a weakly prime, because it can be changed into another prime (157857023189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78928511544 + 78928511545.

It is an arithmetic number, because the mean of its divisors is an integer number (78928511545).

Almost surely, 2^157857023089 is an apocalyptic number.

It is an amenable number.

157857023089 is a deficient number, since it is larger than the sum of its proper divisors (1).

157857023089 is an equidigital number, since it uses as much as digits as its factorization.

157857023089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 157857023089 in words is "one hundred fifty-seven billion, eight hundred fifty-seven million, twenty-three thousand, eighty-nine".