652272537509 has 2 divisors, whose sum is σ = 652272537510. Its totient is φ = 652272537508.

The previous prime is 652272537479. The next prime is 652272537661. The reversal of 652272537509 is 905735272256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630515402500 + 21757135009 = 794050^2 + 147503^2 .

It is a cyclic number.

It is not a de Polignac number, because 652272537509 - 2²⁴ = 652255760293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652272537109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326136268754 + 326136268755.

It is an arithmetic number, because the mean of its divisors is an integer number (326136268755).

Almost surely, 2^652272537509 is an apocalyptic number.

It is an amenable number.

652272537509 is a deficient number, since it is larger than the sum of its proper divisors (1).

652272537509 is an equidigital number, since it uses as much as digits as its factorization.

652272537509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 652272537509 in words is "six hundred fifty-two billion, two hundred seventy-two million, five hundred thirty-seven thousand, five hundred nine".