36173813573 has 2 divisors, whose sum is σ = 36173813574. Its totient is φ = 36173813572.

The previous prime is 36173813563. The next prime is 36173813587. The reversal of 36173813573 is 37531837163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32181848449 + 3991965124 = 179393^2 + 63182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36173813573 is a prime.

It is a super-3 number, since 3×36173813573³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36173813563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18086906786 + 18086906787.

It is an arithmetic number, because the mean of its divisors is an integer number (18086906787).

Almost surely, 2^36173813573 is an apocalyptic number.

It is an amenable number.

36173813573 is a deficient number, since it is larger than the sum of its proper divisors (1).

36173813573 is an equidigital number, since it uses as much as digits as its factorization.

36173813573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 47.

The spelling of 36173813573 in words is "thirty-six billion, one hundred seventy-three million, eight hundred thirteen thousand, five hundred seventy-three".