161611152 has 20 divisors (see below), whose sum is σ = 417495600. Its totient is φ = 53870368.

The previous prime is 161611147. The next prime is 161611159. The reversal of 161611152 is 251116161.

161611152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161611152² = 52236328901534208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (161611159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683402 + ... + 1683497.

It is an arithmetic number, because the mean of its divisors is an integer number (20874780).

Almost surely, 2^161611152 is an apocalyptic number.

161611152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161611152 is an abundant number, since it is smaller than the sum of its proper divisors (255884448).

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

161611152 is a wasteful number, since it uses less digits than its factorization.

161611152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366910 (or 3366904 counting only the distinct ones).

The product of its digits is 360, while the sum is 24.

The square root of 161611152 is about 12712.6374918818. The cubic root of 161611152 is about 544.6996656273.

The spelling of 161611152 in words is "one hundred sixty-one million, six hundred eleven thousand, one hundred fifty-two".