161339294592 has 192 divisors, whose sum is σ = 532178431200. Its totient is φ = 45959380992.

The previous prime is 161339294587. The next prime is 161339294629. The reversal of 161339294592 is 295492933161.

161339294592 is a `hidden beast` number, since 1 + 6 + 13 + 39 + 2 + 9 + 4 + 592 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2687884 + ... + 2747252.

Almost surely, 2^161339294592 is an apocalyptic number.

161339294592 is a gapful number since it is divisible by the number (12) 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 161339294592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266089215600).

161339294592 is an abundant number, since it is smaller than the sum of its proper divisors (370839136608).

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

161339294592 is a wasteful number, since it uses less digits than its factorization.

161339294592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59733 (or 59718 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The spelling of 161339294592 in words is "one hundred sixty-one billion, three hundred thirty-nine million, two hundred ninety-four thousand, five hundred ninety-two".