2115651015 has 16 divisors (see below), whose sum is σ = 3761157600. Its totient is φ = 1128347136.

The previous prime is 2115650981. The next prime is 2115651053. The reversal of 2115651015 is 5101565112.

2115651015 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 651 + 0 + 1 + 5 = 666.

It is not a de Polignac number, because 2115651015 - 2¹¹ = 2115648967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2115651015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7835610 + ... + 7835879.

It is an arithmetic number, because the mean of its divisors is an integer number (235072350).

Almost surely, 2^2115651015 is an apocalyptic number.

2115651015 is a deficient number, since it is larger than the sum of its proper divisors (1645506585).

2115651015 is a wasteful number, since it uses less digits than its factorization.

2115651015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15671503 (or 15671497 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The square root of 2115651015 is about 45996.2065283649. The cubic root of 2115651015 is about 1283.7526217898.

The spelling of 2115651015 in words is "two billion, one hundred fifteen million, six hundred fifty-one thousand, fifteen".