161151267432 has 32 divisors (see below), whose sum is σ = 402888261600. Its totient is φ = 53715743424.

The previous prime is 161151267427. The next prime is 161151267439. The reversal of 161151267432 is 234762151161.

It is not an unprimeable number, because it can be changed into a prime (161151267439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511994 + ... + 1615062.

It is an arithmetic number, because the mean of its divisors is an integer number (12590258175).

Almost surely, 2^161151267432 is an apocalyptic number.

161151267432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161151267432 is an abundant number, since it is smaller than the sum of its proper divisors (241736994168).

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

161151267432 is a wasteful number, since it uses less digits than its factorization.

161151267432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168225 (or 168221 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The spelling of 161151267432 in words is "one hundred sixty-one billion, one hundred fifty-one million, two hundred sixty-seven thousand, four hundred thirty-two".