161032262556 has 96 divisors (see below), whose sum is σ = 416671105536. Its totient is φ = 47994912000.

The previous prime is 161032262551. The next prime is 161032262593. The reversal of 161032262556 is 655262230161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161032262551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3925206 + ... + 3966018.

It is an arithmetic number, because the mean of its divisors is an integer number (4340324016).

Almost surely, 2^161032262556 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 161032262556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208335552768).

161032262556 is an abundant number, since it is smaller than the sum of its proper divisors (255638842980).

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

161032262556 is a wasteful number, since it uses less digits than its factorization.

161032262556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41323 (or 41321 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 161032262556 in words is "one hundred sixty-one billion, thirty-two million, two hundred sixty-two thousand, five hundred fifty-six".