2115115456387 has 2 divisors, whose sum is σ = 2115115456388. Its totient is φ = 2115115456386.

The previous prime is 2115115456357. The next prime is 2115115456429. The reversal of 2115115456387 is 7836545115112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115115456387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115115456387.

It is not a weakly prime, because it can be changed into another prime (2115115456327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057557728193 + 1057557728194.

It is an arithmetic number, because the mean of its divisors is an integer number (1057557728194).

Almost surely, 2^{2115115456387} is an apocalyptic number.

2115115456387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115115456387 is an equidigital number, since it uses as much as digits as its factorization.

2115115456387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 49.

The spelling of 2115115456387 in words is "two trillion, one hundred fifteen billion, one hundred fifteen million, four hundred fifty-six thousand, three hundred eighty-seven".