161574312856 has 32 divisors (see below), whose sum is σ = 330521608080. Its totient is φ = 73436492800.

The previous prime is 161574312821. The next prime is 161574312871. The reversal of 161574312856 is 658213475161.

161574312856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161574312856² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026276 + ... + 1173196.

Almost surely, 2^161574312856 is an apocalyptic number.

It is an amenable number.

161574312856 is an abundant number, since it is smaller than the sum of its proper divisors (168947295224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161574312856 is a wasteful number, since it uses less digits than its factorization.

161574312856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159435 (or 159431 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 161574312856 in words is "one hundred sixty-one billion, five hundred seventy-four million, three hundred twelve thousand, eight hundred fifty-six".