157170430481 has 2 divisors, whose sum is σ = 157170430482. Its totient is φ = 157170430480.

The previous prime is 157170430421. The next prime is 157170430489. The reversal of 157170430481 is 184034071751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153284778256 + 3885652225 = 391516^2 + 62335^2 .

It is a cyclic number.

It is not a de Polignac number, because 157170430481 - 2¹⁴ = 157170414097 is a prime.

It is a super-2 number, since 2×157170430481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157170430489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78585215240 + 78585215241.

It is an arithmetic number, because the mean of its divisors is an integer number (78585215241).

Almost surely, 2^157170430481 is an apocalyptic number.

It is an amenable number.

157170430481 is a deficient number, since it is larger than the sum of its proper divisors (1).

157170430481 is an equidigital number, since it uses as much as digits as its factorization.

157170430481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 157170430481 in words is "one hundred fifty-seven billion, one hundred seventy million, four hundred thirty thousand, four hundred eighty-one".