161419812189680 has 40 divisors (see below), whose sum is σ = 409419341828784. Its totient is φ = 58698113523200.

The previous prime is 161419812189667. The next prime is 161419812189709. The reversal of 161419812189680 is 86981218914161.

It is a tau number, because it is divible by the number of its divisors (40).

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, 91715801501 + ... + 91715803260.

Almost surely, 2^{161419812189680} is an apocalyptic number.

161419812189680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161419812189680 is an abundant number, since it is smaller than the sum of its proper divisors (247999529639104).

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

161419812189680 is a wasteful number, since it uses less digits than its factorization.

161419812189680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183431604785 (or 183431604779 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 65.

The spelling of 161419812189680 in words is "one hundred sixty-one trillion, four hundred nineteen billion, eight hundred twelve million, one hundred eighty-nine thousand, six hundred eighty".