161792420832 has 72 divisors (see below), whose sum is σ = 525825374256. Its totient is φ = 46226405376.

The previous prime is 161792420827. The next prime is 161792420891. The reversal of 161792420832 is 238024297161.

161792420832 is a `hidden beast` number, since 1 + 61 + 7 + 92 + 420 + 83 + 2 = 666.

161792420832 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 40125073 + ... + 40129104.

It is an arithmetic number, because the mean of its divisors is an integer number (7303130198).

Almost surely, 2^161792420832 is an apocalyptic number.

161792420832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161792420832 is an abundant number, since it is smaller than the sum of its proper divisors (364032953424).

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

161792420832 is a wasteful number, since it uses less digits than its factorization.

161792420832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80254200 (or 80254189 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 161792420832 in words is "one hundred sixty-one billion, seven hundred ninety-two million, four hundred twenty thousand, eight hundred thirty-two".