161776017760 has 48 divisors (see below), whose sum is σ = 436795250976. Its totient is φ = 55466062848.

The previous prime is 161776017751. The next prime is 161776017827. The reversal of 161776017760 is 67710677161.

It is a congruent number.

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, 72220317 + ... + 72222556.

It is an arithmetic number, because the mean of its divisors is an integer number (9099901062).

Almost surely, 2^161776017760 is an apocalyptic number.

161776017760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161776017760 is an abundant number, since it is smaller than the sum of its proper divisors (275019233216).

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

161776017760 is a wasteful number, since it uses less digits than its factorization.

161776017760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144442895 (or 144442887 counting only the distinct ones).

The product of its (nonzero) digits is 518616, while the sum is 49.

The spelling of 161776017760 in words is "one hundred sixty-one billion, seven hundred seventy-six million, seventeen thousand, seven hundred sixty".