2115420265 has 16 divisors (see below), whose sum is σ = 2902223232. Its totient is φ = 1450036224.

The previous prime is 2115420187. The next prime is 2115420317. The reversal of 2115420265 is 5620245112.

It is a de Polignac number, because none of the positive numbers 2^k-2115420265 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100162 + ... + 119428.

It is an arithmetic number, because the mean of its divisors is an integer number (181388952).

Almost surely, 2^2115420265 is an apocalyptic number.

It is an amenable number.

2115420265 is a deficient number, since it is larger than the sum of its proper divisors (786802967).

2115420265 is a wasteful number, since it uses less digits than its factorization.

2115420265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22416.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2115420265 is about 45993.6981009355. The cubic root of 2115420265 is about 1283.7059479471.

Adding to 2115420265 its reverse (5620245112), we get a palindrome (7735665377).

The spelling of 2115420265 in words is "two billion, one hundred fifteen million, four hundred twenty thousand, two hundred sixty-five".