15151131999979 has 2 divisors, whose sum is σ = 15151131999980. Its totient is φ = 15151131999978.

The previous prime is 15151131999953. The next prime is 15151131999989. The reversal of 15151131999979 is 97999913115151.

It is a strong prime.

It is an emirp because it is prime and its reverse (97999913115151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15151131999979 - 2¹⁵ = 15151131967211 is a prime.

It is not a weakly prime, because it can be changed into another prime (15151131999989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7575565999989 + 7575565999990.

It is an arithmetic number, because the mean of its divisors is an integer number (7575565999990).

Almost surely, 2^{15151131999979} is an apocalyptic number.

15151131999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

15151131999979 is an equidigital number, since it uses as much as digits as its factorization.

15151131999979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31000725, while the sum is 70.

The spelling of 15151131999979 in words is "fifteen trillion, one hundred fifty-one billion, one hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred seventy-nine".