161494432932 has 96 divisors (see below), whose sum is σ = 449519099904. Its totient is φ = 44121052800.

The previous prime is 161494432901. The next prime is 161494432933. The reversal of 161494432932 is 239234494161.

161494432932 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 2×161494432932² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161494432933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7003582 + ... + 7026602.

It is an arithmetic number, because the mean of its divisors is an integer number (4682490624).

Almost surely, 2^161494432932 is an apocalyptic number.

161494432932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161494432932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224759549952).

161494432932 is an abundant number, since it is smaller than the sum of its proper divisors (288024666972).

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

161494432932 is a wasteful number, since it uses less digits than its factorization.

161494432932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26689 (or 26687 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 48.

The spelling of 161494432932 in words is "one hundred sixty-one billion, four hundred ninety-four million, four hundred thirty-two thousand, nine hundred thirty-two".