161660101164 has 48 divisors (see below), whose sum is σ = 384585757920. Its totient is φ = 52833963520.

The previous prime is 161660101133. The next prime is 161660101199. The reversal of 161660101164 is 461101066161.

It is a super-2 number, since 2×161660101164² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856102 + ... + 1027730.

It is an arithmetic number, because the mean of its divisors is an integer number (8012203290).

Almost surely, 2^161660101164 is an apocalyptic number.

It is an amenable number.

161660101164 is an abundant number, since it is smaller than the sum of its proper divisors (222925656756).

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

161660101164 is a wasteful number, since it uses less digits than its factorization.

161660101164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173170 (or 173168 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 161660101164 in words is "one hundred sixty-one billion, six hundred sixty million, one hundred one thousand, one hundred sixty-four".