161736537692 has 24 divisors (see below), whose sum is σ = 283368985200. Its totient is φ = 80774024576.

The previous prime is 161736537667. The next prime is 161736537701. The reversal of 161736537692 is 296735637161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18861518 + ... + 18870090.

It is an arithmetic number, because the mean of its divisors is an integer number (11807041050).

Almost surely, 2^161736537692 is an apocalyptic number.

It is an amenable number.

161736537692 is a deficient number, since it is larger than the sum of its proper divisors (121632447508).

161736537692 is a wasteful number, since it uses less digits than its factorization.

161736537692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13525 (or 13523 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 56.

The spelling of 161736537692 in words is "one hundred sixty-one billion, seven hundred thirty-six million, five hundred thirty-seven thousand, six hundred ninety-two".