36663172645525 has 6 divisors (see below), whose sum is σ = 45462334080482. Its totient is φ = 29330538116400.

The previous prime is 36663172645523. The next prime is 36663172645597. The reversal of 36663172645525 is 52554627136663.

It can be written as a sum of positive squares in 3 ways, for example, as 49515595441 + 36613657050084 = 222521^2 + 6050922^2 .

It is not a de Polignac number, because 36663172645525 - 2¹ = 36663172645523 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 (36663172645523) 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, 733263452886 + ... + 733263452935.

Almost surely, 2^{36663172645525} is an apocalyptic number.

It is an amenable number.

36663172645525 is a deficient number, since it is larger than the sum of its proper divisors (8799161434957).

36663172645525 is a wasteful number, since it uses less digits than its factorization.

36663172645525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466526905831 (or 1466526905826 counting only the distinct ones).

The product of its digits is 163296000, while the sum is 61.

The spelling of 36663172645525 in words is "thirty-six trillion, six hundred sixty-three billion, one hundred seventy-two million, six hundred forty-five thousand, five hundred twenty-five".