161668310760 has 96 divisors (see below), whose sum is σ = 573187661280. Its totient is φ = 39192316800.

The previous prime is 161668310753. The next prime is 161668310777. The reversal of 161668310760 is 67013866161.

It is a super-2 number, since 2×161668310760² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20408706 + ... + 20416625.

It is an arithmetic number, because the mean of its divisors is an integer number (5970704805).

Almost surely, 2^161668310760 is an apocalyptic number.

161668310760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161668310760 is an abundant number, since it is smaller than the sum of its proper divisors (411519350520).

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

161668310760 is a wasteful number, since it uses less digits than its factorization.

161668310760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40825359 (or 40825352 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 161668310760 in words is "one hundred sixty-one billion, six hundred sixty-eight million, three hundred ten thousand, seven hundred sixty".