157158571489 has 2 divisors, whose sum is σ = 157158571490. Its totient is φ = 157158571488.

The previous prime is 157158571481. The next prime is 157158571607. The reversal of 157158571489 is 984175851751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114712270864 + 42446300625 = 338692^2 + 206025^2 .

It is a cyclic number.

It is not a de Polignac number, because 157158571489 - 2³ = 157158571481 is a prime.

It is not a weakly prime, because it can be changed into another prime (157158571481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78579285744 + 78579285745.

It is an arithmetic number, because the mean of its divisors is an integer number (78579285745).

Almost surely, 2^157158571489 is an apocalyptic number.

It is an amenable number.

157158571489 is a deficient number, since it is larger than the sum of its proper divisors (1).

157158571489 is an equidigital number, since it uses as much as digits as its factorization.

157158571489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112000, while the sum is 61.

The spelling of 157158571489 in words is "one hundred fifty-seven billion, one hundred fifty-eight million, five hundred seventy-one thousand, four hundred eighty-nine".