161330316252 has 24 divisors (see below), whose sum is σ = 430214176896. Its totient is φ = 46094376048.

The previous prime is 161330316233. The next prime is 161330316269. The reversal of 161330316252 is 252613033161.

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, 960299418 + ... + 960299585.

It is an arithmetic number, because the mean of its divisors is an integer number (17925590704).

Almost surely, 2^161330316252 is an apocalyptic number.

161330316252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161330316252 is an abundant number, since it is smaller than the sum of its proper divisors (268883860644).

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

161330316252 is a wasteful number, since it uses less digits than its factorization.

161330316252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920599017 (or 1920599015 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 161330316252 in words is "one hundred sixty-one billion, three hundred thirty million, three hundred sixteen thousand, two hundred fifty-two".