161140607873280 has 432 divisors, whose sum is σ = 639351578960640. Its totient is φ = 36706426601472.

The previous prime is 161140607873261. The next prime is 161140607873293. The reversal of 161140607873280 is 82378706041161.

161140607873280 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 4 + 0 + 607 + 8 + 7 + 3 + 28 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20217501 + ... + 27037539.

Almost surely, 2^{161140607873280} is an apocalyptic number.

161140607873280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161140607873280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319675789480320).

161140607873280 is an abundant number, since it is smaller than the sum of its proper divisors (478210971087360).

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

161140607873280 is a wasteful number, since it uses less digits than its factorization.

161140607873280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820366 (or 6820349 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 161140607873280 in words is "one hundred sixty-one trillion, one hundred forty billion, six hundred seven million, eight hundred seventy-three thousand, two hundred eighty".