161161516 has 24 divisors (see below), whose sum is σ = 286702640. Its totient is φ = 79252992.

The previous prime is 161161493. The next prime is 161161519. The reversal of 161161516 is 615161161.

It is not an unprimeable number, because it can be changed into a prime (161161519) 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, 159220 + ... + 160228.

Almost surely, 2^161161516 is an apocalyptic number.

It is an amenable number.

161161516 is a deficient number, since it is larger than the sum of its proper divisors (125541124).

161161516 is a wasteful number, since it uses less digits than its factorization.

161161516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1631 counting only the distinct ones).

The product of its digits is 1080, while the sum is 28.

The square root of 161161516 is about 12694.9405670133. The cubic root of 161161516 is about 544.1940403164.

The spelling of 161161516 in words is "one hundred sixty-one million, one hundred sixty-one thousand, five hundred sixteen".