2115249278505 has 128 divisors (see below), whose sum is σ = 4056897761280. Its totient is φ = 929003074560.

The previous prime is 2115249278501. The next prime is 2115249278509. The reversal of 2115249278505 is 5058729425112.

It is an interprime number because it is at equal distance from previous prime (2115249278501) and next prime (2115249278509).

It is not a de Polignac number, because 2115249278505 - 2² = 2115249278501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115249278501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 314158119 + ... + 314164851.

It is an arithmetic number, because the mean of its divisors is an integer number (31694513760).

Almost surely, 2^{2115249278505} is an apocalyptic number.

It is an amenable number.

2115249278505 is a deficient number, since it is larger than the sum of its proper divisors (1941648482775).

2115249278505 is a wasteful number, since it uses less digits than its factorization.

2115249278505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151.

The product of its (nonzero) digits is 2016000, while the sum is 51.

The spelling of 2115249278505 in words is "two trillion, one hundred fifteen billion, two hundred forty-nine million, two hundred seventy-eight thousand, five hundred five".