11515126379 has 2 divisors, whose sum is σ = 11515126380. Its totient is φ = 11515126378.

The previous prime is 11515126373. The next prime is 11515126397. The reversal of 11515126379 is 97362151511.

Together with next prime (11515126397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11515126379 - 2³² = 7220159083 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11515126373) 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, 5757563189 + 5757563190.

It is an arithmetic number, because the mean of its divisors is an integer number (5757563190).

Almost surely, 2^11515126379 is an apocalyptic number.

11515126379 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515126379 is an equidigital number, since it uses as much as digits as its factorization.

11515126379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 41.

The spelling of 11515126379 in words is "eleven billion, five hundred fifteen million, one hundred twenty-six thousand, three hundred seventy-nine".