157171015487 has 2 divisors, whose sum is σ = 157171015488. Its totient is φ = 157171015486.

The previous prime is 157171015451. The next prime is 157171015541. The reversal of 157171015487 is 784510171751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157171015487 - 2¹⁴ = 157170999103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157171015087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78585507743 + 78585507744.

It is an arithmetic number, because the mean of its divisors is an integer number (78585507744).

Almost surely, 2^157171015487 is an apocalyptic number.

157171015487 is a deficient number, since it is larger than the sum of its proper divisors (1).

157171015487 is an equidigital number, since it uses as much as digits as its factorization.

157171015487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274400, while the sum is 47.

The spelling of 157171015487 in words is "one hundred fifty-seven billion, one hundred seventy-one million, fifteen thousand, four hundred eighty-seven".