161136504481332 has 24 divisors (see below), whose sum is σ = 376442024262976. Its totient is φ = 53646904283328.

The previous prime is 161136504481289. The next prime is 161136504481333. The reversal of 161136504481332 is 233184405631161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161136504481333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8157974353 + ... + 8157994104.

Almost surely, 2^{161136504481332} is an apocalyptic number.

161136504481332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161136504481332 is an abundant number, since it is smaller than the sum of its proper divisors (215305519781644).

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

161136504481332 is a wasteful number, since it uses less digits than its factorization.

161136504481332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315969287 (or 16315969285 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 161136504481332 in words is "one hundred sixty-one trillion, one hundred thirty-six billion, five hundred four million, four hundred eighty-one thousand, three hundred thirty-two".