12501535511 has 2 divisors, whose sum is σ = 12501535512. Its totient is φ = 12501535510.

The previous prime is 12501535489. The next prime is 12501535559. The reversal of 12501535511 is 11553510521.

12501535511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12501535511 is a prime.

It is a super-2 number, since 2×12501535511² (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 (12501535411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250767755 + 6250767756.

It is an arithmetic number, because the mean of its divisors is an integer number (6250767756).

Almost surely, 2^12501535511 is an apocalyptic number.

12501535511 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501535511 is an equidigital number, since it uses as much as digits as its factorization.

12501535511 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 29.

The spelling of 12501535511 in words is "twelve billion, five hundred one million, five hundred thirty-five thousand, five hundred eleven".