161914885472 has 24 divisors (see below), whose sum is σ = 318975289416. Its totient is φ = 80905288192.

The previous prime is 161914885469. The next prime is 161914885547. The reversal of 161914885472 is 274588419161.

It is a congruent 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, 1579358 + ... + 1678749.

It is an arithmetic number, because the mean of its divisors is an integer number (13290637059).

Almost surely, 2^161914885472 is an apocalyptic number.

It is an amenable number.

161914885472 is a deficient number, since it is larger than the sum of its proper divisors (157060403944).

161914885472 is a wasteful number, since it uses less digits than its factorization.

161914885472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259670 (or 3259662 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 56.

The spelling of 161914885472 in words is "one hundred sixty-one billion, nine hundred fourteen million, eight hundred eighty-five thousand, four hundred seventy-two".