161914885590 has 16 divisors (see below), whose sum is σ = 388595725488. Its totient is φ = 43177302816.

The previous prime is 161914885567. The next prime is 161914885619. The reversal of 161914885590 is 95588419161.

161914885590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161914885590.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2698581397 + ... + 2698581456.

It is an arithmetic number, because the mean of its divisors is an integer number (24287232843).

Almost surely, 2^161914885590 is an apocalyptic number.

161914885590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161914885590 is an abundant number, since it is smaller than the sum of its proper divisors (226680839898).

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

161914885590 is a wasteful number, since it uses less digits than its factorization.

161914885590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397162863.

The product of its (nonzero) digits is 3110400, while the sum is 57.

The spelling of 161914885590 in words is "one hundred sixty-one billion, nine hundred fourteen million, eight hundred eighty-five thousand, five hundred ninety".