137161263161 has 4 divisors (see below), whose sum is σ = 147712129572. Its totient is φ = 126610396752.

The previous prime is 137161263157. The next prime is 137161263247. The reversal of 137161263161 is 161362161731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93059163136 + 44102100025 = 305056^2 + 210005^2 .

It is a cyclic number.

It is not a de Polignac number, because 137161263161 - 2² = 137161263157 is a prime.

It is a super-2 number, since 2×137161263161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137161263121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275433186 + ... + 5275433211.

It is an arithmetic number, because the mean of its divisors is an integer number (36928032393).

Almost surely, 2^137161263161 is an apocalyptic number.

It is an amenable number.

137161263161 is a deficient number, since it is larger than the sum of its proper divisors (10550866411).

137161263161 is a wasteful number, since it uses less digits than its factorization.

137161263161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550866410.

The product of its digits is 27216, while the sum is 38.

The spelling of 137161263161 in words is "one hundred thirty-seven billion, one hundred sixty-one million, two hundred sixty-three thousand, one hundred sixty-one".