161403130632 has 32 divisors (see below), whose sum is σ = 403592371200. Its totient is φ = 53789770944.

The previous prime is 161403130619. The next prime is 161403130633. The reversal of 161403130632 is 236031304161.

It is a self number, because there is not a number n which added to its sum of digits gives 161403130632.

It is not an unprimeable number, because it can be changed into a prime (161403130633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587208 + ... + 817079.

It is an arithmetic number, because the mean of its divisors is an integer number (12612261600).

Almost surely, 2^161403130632 is an apocalyptic number.

161403130632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161403130632 is an abundant number, since it is smaller than the sum of its proper divisors (242189240568).

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

161403130632 is a wasteful number, since it uses less digits than its factorization.

161403130632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409085 (or 1409081 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 161403130632 its reverse (236031304161), we get a palindrome (397434434793).

The spelling of 161403130632 in words is "one hundred sixty-one billion, four hundred three million, one hundred thirty thousand, six hundred thirty-two".