2115670815 has 48 divisors (see below), whose sum is σ = 3704762880. Its totient is φ = 1116849600.

The previous prime is 2115670813. The next prime is 2115670867. The reversal of 2115670815 is 5180765112.

2115670815 is a `hidden beast` number, since 2 + 11 + 567 + 0 + 81 + 5 = 666.

It is not a de Polignac number, because 2115670815 - 2¹ = 2115670813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115670815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115670813) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3417576 + ... + 3418194.

It is an arithmetic number, because the mean of its divisors is an integer number (77182560).

Almost surely, 2^2115670815 is an apocalyptic number.

2115670815 is a deficient number, since it is larger than the sum of its proper divisors (1589092065).

2115670815 is a wasteful number, since it uses less digits than its factorization.

2115670815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 36.

The square root of 2115670815 is about 45996.4217630024. The cubic root of 2115670815 is about 1283.7566265811.

The spelling of 2115670815 in words is "two billion, one hundred fifteen million, six hundred seventy thousand, eight hundred fifteen".