12015300991 has 2 divisors, whose sum is σ = 12015300992. Its totient is φ = 12015300990.

The previous prime is 12015300877. The next prime is 12015301007. The reversal of 12015300991 is 19900351021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12015300991 - 2¹⁷ = 12015169919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12015303991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6007650495 + 6007650496.

It is an arithmetic number, because the mean of its divisors is an integer number (6007650496).

Almost surely, 2^12015300991 is an apocalyptic number.

12015300991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015300991 is an equidigital number, since it uses as much as digits as its factorization.

12015300991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The spelling of 12015300991 in words is "twelve billion, fifteen million, three hundred thousand, nine hundred ninety-one".