156161664 has 96 divisors (see below), whose sum is σ = 451900800. Its totient is φ = 51761664.

The previous prime is 156161659. The next prime is 156161669. The reversal of 156161664 is 466161651.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (156161659) and next prime (156161669).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (156161669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325777 + ... + 326255.

It is an arithmetic number, because the mean of its divisors is an integer number (4707300).

Almost surely, 2^156161664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156161664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225950400).

156161664 is an abundant number, since it is smaller than the sum of its proper divisors (295739136).

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

156161664 is a wasteful number, since it uses less digits than its factorization.

156161664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 767 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 156161664 is about 12496.4660604509. The cubic root of 156161664 is about 538.5071524980.

The spelling of 156161664 in words is "one hundred fifty-six million, one hundred sixty-one thousand, six hundred sixty-four".