157170430489 has 2 divisors, whose sum is σ = 157170430490. Its totient is φ = 157170430488.

The previous prime is 157170430481. The next prime is 157170430519. The reversal of 157170430489 is 984034071751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148295848464 + 8874582025 = 385092^2 + 94205^2 .

It is a cyclic number.

It is not a de Polignac number, because 157170430489 - 2³ = 157170430481 is a prime.

It is not a weakly prime, because it can be changed into another prime (157170430481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78585215244 + 78585215245.

It is an arithmetic number, because the mean of its divisors is an integer number (78585215245).

Almost surely, 2^157170430489 is an apocalyptic number.

It is an amenable number.

157170430489 is a deficient number, since it is larger than the sum of its proper divisors (1).

157170430489 is an equidigital number, since it uses as much as digits as its factorization.

157170430489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 157170430489 in words is "one hundred fifty-seven billion, one hundred seventy million, four hundred thirty thousand, four hundred eighty-nine".