161876560 has 40 divisors (see below), whose sum is σ = 380913120. Its totient is φ = 63967872.

The previous prime is 161876557. The next prime is 161876563. The reversal of 161876560 is 65678161.

It is an interprime number because it is at equal distance from previous prime (161876557) and next prime (161876563).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161876563) 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, 5550 + ... + 18829.

It is an arithmetic number, because the mean of its divisors is an integer number (9522828).

Almost surely, 2^161876560 is an apocalyptic number.

161876560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161876560 is an abundant number, since it is smaller than the sum of its proper divisors (219036560).

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

161876560 is a wasteful number, since it uses less digits than its factorization.

161876560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24475 (or 24469 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 161876560 is about 12723.0719560961. The cubic root of 161876560 is about 544.9976825646.

The spelling of 161876560 in words is "one hundred sixty-one million, eight hundred seventy-six thousand, five hundred sixty".