14215152509 has 2 divisors, whose sum is σ = 14215152510. Its totient is φ = 14215152508.

The previous prime is 14215152493. The next prime is 14215152527. The reversal of 14215152509 is 90525151241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12225724900 + 1989427609 = 110570^2 + 44603^2 .

It is a cyclic number.

It is not a de Polignac number, because 14215152509 - 2⁴ = 14215152493 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 (14215152569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107576254 + 7107576255.

It is an arithmetic number, because the mean of its divisors is an integer number (7107576255).

Almost surely, 2^14215152509 is an apocalyptic number.

It is an amenable number.

14215152509 is a deficient number, since it is larger than the sum of its proper divisors (1).

14215152509 is an equidigital number, since it uses as much as digits as its factorization.

14215152509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 14215152509 in words is "fourteen billion, two hundred fifteen million, one hundred fifty-two thousand, five hundred nine".