2116606505 has 16 divisors (see below), whose sum is σ = 2896208784. Its totient is φ = 1471088640.

The previous prime is 2116606451. The next prime is 2116606529. The reversal of 2116606505 is 5056066112.

It can be written as a sum of positive squares in 8 ways, for example, as 151191616 + 1965414889 = 12296^2 + 44333^2 .

It is not a de Polignac number, because 2116606505 - 2⁸ = 2116606249 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, 956636 + ... + 958845.

It is an arithmetic number, because the mean of its divisors is an integer number (181013049).

Almost surely, 2^2116606505 is an apocalyptic number.

It is an amenable number.

2116606505 is a deficient number, since it is larger than the sum of its proper divisors (779602279).

2116606505 is a wasteful number, since it uses less digits than its factorization.

2116606505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915516.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2116606505 is about 46006.5919733249. The cubic root of 2116606505 is about 1283.9458528050.

The spelling of 2116606505 in words is "two billion, one hundred sixteen million, six hundred six thousand, five hundred five".