161295858120 has 64 divisors (see below), whose sum is σ = 495689725440. Its totient is φ = 41963148800.

The previous prime is 161295858083. The next prime is 161295858127. The reversal of 161295858120 is 21858592161.

It is a self number, because there is not a number n which added to its sum of digits gives 161295858120.

It is not an unprimeable number, because it can be changed into a prime (161295858127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16386936 + ... + 16396775.

It is an arithmetic number, because the mean of its divisors is an integer number (7745151960).

Almost surely, 2^161295858120 is an apocalyptic number.

161295858120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161295858120 is an abundant number, since it is smaller than the sum of its proper divisors (334393867320).

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

161295858120 is a wasteful number, since it uses less digits than its factorization.

161295858120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32783766 (or 32783762 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 48.

The spelling of 161295858120 in words is "one hundred sixty-one billion, two hundred ninety-five million, eight hundred fifty-eight thousand, one hundred twenty".