36661244173 has 6 divisors (see below), whose sum is σ = 38692338414. Its totient is φ = 34731704664.

The previous prime is 36661244161. The next prime is 36661244203. The reversal of 36661244173 is 37144216663.

It can be written as a sum of positive squares in only one way, i.e., 36222844329 + 438399844 = 190323^2 + 20938^2 .

It is not a de Polignac number, because 36661244173 - 2²⁵ = 36627689741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36661244143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50776986 + ... + 50777707.

It is an arithmetic number, because the mean of its divisors is an integer number (6448723069).

Almost surely, 2^36661244173 is an apocalyptic number.

It is an amenable number.

36661244173 is a deficient number, since it is larger than the sum of its proper divisors (2031094241).

36661244173 is a wasteful number, since it uses less digits than its factorization.

36661244173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101554731 (or 101554712 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

The spelling of 36661244173 in words is "thirty-six billion, six hundred sixty-one million, two hundred forty-four thousand, one hundred seventy-three".