161935814240 has 48 divisors (see below), whose sum is σ = 382639587120. Its totient is φ = 64763112960.

The previous prime is 161935814189. The next prime is 161935814269. The reversal of 161935814240 is 42418539161.

It is a junction number, because it is equal to n+sod(n) for n = 161935814191 and 161935814200.

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, 872351 + ... + 1041569.

It is an arithmetic number, because the mean of its divisors is an integer number (7971658065).

Almost surely, 2^161935814240 is an apocalyptic number.

161935814240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161935814240 is an abundant number, since it is smaller than the sum of its proper divisors (220703772880).

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

161935814240 is a wasteful number, since it uses less digits than its factorization.

161935814240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175215 (or 175207 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 161935814240 in words is "one hundred sixty-one billion, nine hundred thirty-five million, eight hundred fourteen thousand, two hundred forty".