161616150051560 has 32 divisors (see below), whose sum is σ = 368617657316040. Its totient is φ = 63760892073984.

The previous prime is 161616150051529. The next prime is 161616150051569. The reversal of 161616150051560 is 65150051616161.

It can be written as a sum of positive squares in 4 ways, for example, as 153373313822404 + 8242836229156 = 12384398^2 + 2871034^2 .

It is a super-2 number, since 2×161616150051560² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161616150051569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27673995377 + ... + 27674001216.

Almost surely, 2^{161616150051560} is an apocalyptic number.

161616150051560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161616150051560 is an abundant number, since it is smaller than the sum of its proper divisors (207001507264480).

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

161616150051560 is a wasteful number, since it uses less digits than its factorization.

161616150051560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55347996677 (or 55347996673 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 161616150051560 in words is "one hundred sixty-one trillion, six hundred sixteen billion, one hundred fifty million, fifty-one thousand, five hundred sixty".