2116510515 has 48 divisors (see below), whose sum is σ = 4198154688. Its totient is φ = 966290688.

The previous prime is 2116510507. The next prime is 2116510549. The reversal of 2116510515 is 5150156112.

2116510515 is a `hidden beast` number, since 2 + 1 + 1 + 651 + 0 + 5 + 1 + 5 = 666.

It is not a de Polignac number, because 2116510515 - 2³ = 2116510507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264757 + ... + 272633.

It is an arithmetic number, because the mean of its divisors is an integer number (87461556).

Almost surely, 2^2116510515 is an apocalyptic number.

2116510515 is a deficient number, since it is larger than the sum of its proper divisors (2081644173).

2116510515 is a wasteful number, since it uses less digits than its factorization.

2116510515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8748 (or 8745 counting only the distinct ones).

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

The square root of 2116510515 is about 46005.5487414290. The cubic root of 2116510515 is about 1283.9264431470.

Adding to 2116510515 its reverse (5150156112), we get a palindrome (7266666627).

It can be divided in two parts, 2116510 and 515, that added together give a square (2117025 = 1455²).

The spelling of 2116510515 in words is "two billion, one hundred sixteen million, five hundred ten thousand, five hundred fifteen".