161517060120 has 64 divisors (see below), whose sum is σ = 521824353120. Its totient is φ = 39758045184.

The previous prime is 161517060109. The next prime is 161517060121. The reversal of 161517060120 is 21060715161.

161517060120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161517060121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51766729 + ... + 51769848.

Almost surely, 2^161517060120 is an apocalyptic number.

161517060120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161517060120 is an abundant number, since it is smaller than the sum of its proper divisors (360307293000).

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

161517060120 is a wasteful number, since it uses less digits than its factorization.

161517060120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103536604 (or 103536600 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

Adding to 161517060120 its reverse (21060715161), we get a palindrome (182577775281).

The spelling of 161517060120 in words is "one hundred sixty-one billion, five hundred seventeen million, sixty thousand, one hundred twenty".