161009654372 has 12 divisors (see below), whose sum is σ = 322019308800. Its totient is φ = 69004137576.

The previous prime is 161009654341. The next prime is 161009654417. The reversal of 161009654372 is 273456900161.

161009654372 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2875172372 + ... + 2875172427.

It is an arithmetic number, because the mean of its divisors is an integer number (26834942400).

Almost surely, 2^161009654372 is an apocalyptic number.

It is an amenable number.

161009654372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161009654372 is a wasteful number, since it uses less digits than its factorization.

161009654372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750344810 (or 5750344808 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 161009654372 in words is "one hundred sixty-one billion, nine million, six hundred fifty-four thousand, three hundred seventy-two".