161556550506110 has 8 divisors (see below), whose sum is σ = 290801790911016. Its totient is φ = 64622620202440.

The previous prime is 161556550506079. The next prime is 161556550506163. The reversal of 161556550506110 is 11605055655161.

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

It is a super-2 number, since 2×161556550506110² (a number of 29 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, 8077827525296 + ... + 8077827525315.

It is an arithmetic number, because the mean of its divisors is an integer number (36350223863877).

Almost surely, 2^{161556550506110} is an apocalyptic number.

161556550506110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161556550506110 is a deficient number, since it is larger than the sum of its proper divisors (129245240404906).

161556550506110 is a wasteful number, since it uses less digits than its factorization.

161556550506110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16155655050618.

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 161556550506110 in words is "one hundred sixty-one trillion, five hundred fifty-six billion, five hundred fifty million, five hundred six thousand, one hundred ten".