161574312855 has 16 divisors (see below), whose sum is σ = 258566215680. Its totient is φ = 86157195168.

The previous prime is 161574312821. The next prime is 161574312871. The reversal of 161574312855 is 558213475161.

It is not a de Polignac number, because 161574312855 - 2⁶ = 161574312791 is a prime.

It is a super-2 number, since 2×161574312855² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900807 + ... + 1065176.

It is an arithmetic number, because the mean of its divisors is an integer number (16160388480).

Almost surely, 2^161574312855 is an apocalyptic number.

161574312855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161574312855 is a deficient number, since it is larger than the sum of its proper divisors (96991902825).

161574312855 is a wasteful number, since it uses less digits than its factorization.

161574312855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971470.

The product of its digits is 1008000, while the sum is 48.

The spelling of 161574312855 in words is "one hundred sixty-one billion, five hundred seventy-four million, three hundred twelve thousand, eight hundred fifty-five".