12530501551 has 2 divisors, whose sum is σ = 12530501552. Its totient is φ = 12530501550.

The previous prime is 12530501531. The next prime is 12530501587. The reversal of 12530501551 is 15510503521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12530501551 is a prime.

It is a super-2 number, since 2×12530501551² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12530501531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265250775 + 6265250776.

It is an arithmetic number, because the mean of its divisors is an integer number (6265250776).

Almost surely, 2^12530501551 is an apocalyptic number.

12530501551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530501551 is an equidigital number, since it uses as much as digits as its factorization.

12530501551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 12530501551 in words is "twelve billion, five hundred thirty million, five hundred one thousand, five hundred fifty-one".