161056660160 has 56 divisors (see below), whose sum is σ = 418381287696. Its totient is φ = 58566056960.

The previous prime is 161056660147. The next prime is 161056660169. The reversal of 161056660160 is 61066650161.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (161056660169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22873847 + ... + 22880886.

Almost surely, 2^161056660160 is an apocalyptic number.

161056660160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161056660160 is an abundant number, since it is smaller than the sum of its proper divisors (257324627536).

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

161056660160 is a wasteful number, since it uses less digits than its factorization.

161056660160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45754761 (or 45754751 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

Subtracting from 161056660160 its reverse (61066650161), we obtain a palindrome (99990009999).

The spelling of 161056660160 in words is "one hundred sixty-one billion, fifty-six million, six hundred sixty thousand, one hundred sixty".