161513351660 has 24 divisors (see below), whose sum is σ = 339318122976. Its totient is φ = 64578657920.

The previous prime is 161513351653. The next prime is 161513351693. The reversal of 161513351660 is 66153315161.

161513351660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618001 + ... + 1714920.

It is an arithmetic number, because the mean of its divisors is an integer number (14138255124).

Almost surely, 2^161513351660 is an apocalyptic number.

161513351660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161513351660 is an abundant number, since it is smaller than the sum of its proper divisors (177804771316).

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

161513351660 is a wasteful number, since it uses less digits than its factorization.

161513351660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335353 (or 3335351 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The spelling of 161513351660 in words is "one hundred sixty-one billion, five hundred thirteen million, three hundred fifty-one thousand, six hundred sixty".