6632172539 has 2 divisors, whose sum is σ = 6632172540. Its totient is φ = 6632172538.

The previous prime is 6632172527. The next prime is 6632172593. The reversal of 6632172539 is 9352712366.

Together with next prime (6632172593) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6632172539 - 2²⁴ = 6615395323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6632172539.

It is not a weakly prime, because it can be changed into another prime (6632172439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3316086269 + 3316086270.

It is an arithmetic number, because the mean of its divisors is an integer number (3316086270).

Almost surely, 2^6632172539 is an apocalyptic number.

6632172539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6632172539 is an equidigital number, since it uses as much as digits as its factorization.

6632172539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 6632172539 is about 81438.1516182680. The cubic root of 6632172539 is about 1878.8204214873.

The spelling of 6632172539 in words is "six billion, six hundred thirty-two million, one hundred seventy-two thousand, five hundred thirty-nine".