161457317160 has 64 divisors (see below), whose sum is σ = 484416979200. Its totient is φ = 43051282176.

The previous prime is 161457317111. The next prime is 161457317167. The reversal of 161457317160 is 61713754161.

It is a super-3 number, since 3×161457317160³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (161457317167) 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, 1369846 + ... + 1483034.

It is an arithmetic number, because the mean of its divisors is an integer number (7569015300).

Almost surely, 2^161457317160 is an apocalyptic number.

161457317160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161457317160 is an abundant number, since it is smaller than the sum of its proper divisors (322959662040).

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

161457317160 is a wasteful number, since it uses less digits than its factorization.

161457317160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125090 (or 125086 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 161457317160 in words is "one hundred sixty-one billion, four hundred fifty-seven million, three hundred seventeen thousand, one hundred sixty".