161568768 has 48 divisors (see below), whose sum is σ = 430761240. Its totient is φ = 53854208.

The previous prime is 161568749. The next prime is 161568793. The reversal of 161568768 is 867865161.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×161568768² = 52208933586075648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7005 + ... + 19292.

Almost surely, 2^161568768 is an apocalyptic number.

It is an amenable number.

161568768 is an abundant number, since it is smaller than the sum of its proper divisors (269192472).

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

161568768 is an equidigital number, since it uses as much as digits as its factorization.

161568768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26322 (or 26302 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 161568768 is about 12710.9703799513. The cubic root of 161568768 is about 544.6520439774.

The spelling of 161568768 in words is "one hundred sixty-one million, five hundred sixty-eight thousand, seven hundred sixty-eight".