161580853886 has 8 divisors (see below), whose sum is σ = 242378388984. Its totient is φ = 80788057560.

The previous prime is 161580853871. The next prime is 161580853933. The reversal of 161580853886 is 688358085161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161580853886² (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 3 ways as a sum of consecutive naturals, for example, 1098185 + ... + 1236596.

It is an arithmetic number, because the mean of its divisors is an integer number (30297298623).

Almost surely, 2^161580853886 is an apocalyptic number.

161580853886 is a deficient number, since it is larger than the sum of its proper divisors (80797535098).

161580853886 is a wasteful number, since it uses less digits than its factorization.

161580853886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369386.

The product of its (nonzero) digits is 11059200, while the sum is 59.

The spelling of 161580853886 in words is "one hundred sixty-one billion, five hundred eighty million, eight hundred fifty-three thousand, eight hundred eighty-six".