170727163157 has 4 divisors (see below), whose sum is σ = 171585088800. Its totient is φ = 169869237516.

The previous prime is 170727163121. The next prime is 170727163177. The reversal of 170727163157 is 751361727071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751361727071 = 23 ⋅32667901177.

It is a cyclic number.

It is not a de Polignac number, because 170727163157 - 2¹² = 170727159061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170727163177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428962523 + ... + 428962920.

It is an arithmetic number, because the mean of its divisors is an integer number (42896272200).

Almost surely, 2^170727163157 is an apocalyptic number.

It is an amenable number.

170727163157 is a deficient number, since it is larger than the sum of its proper divisors (857925643).

170727163157 is an equidigital number, since it uses as much as digits as its factorization.

170727163157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857925642.

The product of its (nonzero) digits is 432180, while the sum is 47.

The spelling of 170727163157 in words is "one hundred seventy billion, seven hundred twenty-seven million, one hundred sixty-three thousand, one hundred fifty-seven".