161104905960 has 256 divisors, whose sum is σ = 503953781760. Its totient is φ = 41170913280.

The previous prime is 161104905959. The next prime is 161104906007. The reversal of 161104905960 is 69509401161.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79478467 + ... + 79480493.

It is an arithmetic number, because the mean of its divisors is an integer number (1968569460).

Almost surely, 2^161104905960 is an apocalyptic number.

161104905960 is a gapful number since it is divisible by the number (10) 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 161104905960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251976890880).

161104905960 is an abundant number, since it is smaller than the sum of its proper divisors (342848875800).

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

161104905960 is a wasteful number, since it uses less digits than its factorization.

161104905960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 161104905960 in words is "one hundred sixty-one billion, one hundred four million, nine hundred five thousand, nine hundred sixty".