12502151891 has 2 divisors, whose sum is σ = 12502151892. Its totient is φ = 12502151890.

The previous prime is 12502151881. The next prime is 12502151897. The reversal of 12502151891 is 19815120521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12502151891 is a prime.

It is not a weakly prime, because it can be changed into another prime (12502151897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251075945 + 6251075946.

It is an arithmetic number, because the mean of its divisors is an integer number (6251075946).

Almost surely, 2^12502151891 is an apocalyptic number.

12502151891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12502151891 is an equidigital number, since it uses as much as digits as its factorization.

12502151891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 35.

The spelling of 12502151891 in words is "twelve billion, five hundred two million, one hundred fifty-one thousand, eight hundred ninety-one".