161175766020 has 24 divisors (see below), whose sum is σ = 451292145024. Its totient is φ = 42980204256.

The previous prime is 161175766001. The next prime is 161175766043. The reversal of 161175766020 is 20667571161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343131324 + ... + 1343131443.

It is an arithmetic number, because the mean of its divisors is an integer number (18803839376).

Almost surely, 2^161175766020 is an apocalyptic number.

161175766020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161175766020 is an abundant number, since it is smaller than the sum of its proper divisors (290116379004).

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

161175766020 is a wasteful number, since it uses less digits than its factorization.

161175766020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686262779 (or 2686262777 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 161175766020 in words is "one hundred sixty-one billion, one hundred seventy-five million, seven hundred sixty-six thousand, twenty".