161135313744 has 20 divisors (see below), whose sum is σ = 416266227296. Its totient is φ = 53711771232.

The previous prime is 161135313743. The next prime is 161135313749. The reversal of 161135313744 is 447313531161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161135313743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678492804 + ... + 1678492899.

Almost surely, 2^161135313744 is an apocalyptic number.

It is an amenable number.

161135313744 is an abundant number, since it is smaller than the sum of its proper divisors (255130913552).

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

161135313744 is a wasteful number, since it uses less digits than its factorization.

161135313744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356985714 (or 3356985708 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The spelling of 161135313744 in words is "one hundred sixty-one billion, one hundred thirty-five million, three hundred thirteen thousand, seven hundred forty-four".