161372561362137 has 24 divisors (see below), whose sum is σ = 250062206634240. Its totient is φ = 103871993515920.

The previous prime is 161372561362123. The next prime is 161372561362147. The reversal of 161372561362137 is 731263165273161.

161372561362137 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 7 + 2 + 5 + 6 + 1 + 3 + 621 + 3 + 7 = 666.

It is not a de Polignac number, because 161372561362137 - 2¹⁰ = 161372561361113 is a prime.

It is a super-2 number, since 2×161372561362137² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161372561362147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11449727689 + ... + 11449741782.

It is an arithmetic number, because the mean of its divisors is an integer number (10419258609760).

Almost surely, 2^{161372561362137} is an apocalyptic number.

It is an amenable number.

161372561362137 is a deficient number, since it is larger than the sum of its proper divisors (88689645272103).

161372561362137 is an equidigital number, since it uses as much as digits as its factorization.

161372561362137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22899469515 (or 22899469503 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 161372561362137 in words is "one hundred sixty-one trillion, three hundred seventy-two billion, five hundred sixty-one million, three hundred sixty-two thousand, one hundred thirty-seven".