2116646662499 has 16 divisors (see below), whose sum is σ = 2268790992000. Its totient is φ = 1968665872320.

The previous prime is 2116646662489. The next prime is 2116646662517. The reversal of 2116646662499 is 9942666466112.

It is not a de Polignac number, because 2116646662499 - 2⁸ = 2116646662243 is a prime.

It is a super-2 number, since 2×2116646662499² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116646662439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387509 + ... + 2093670.

It is an arithmetic number, because the mean of its divisors is an integer number (141799437000).

Almost surely, 2^{2116646662499} is an apocalyptic number.

2116646662499 is a deficient number, since it is larger than the sum of its proper divisors (152144329501).

2116646662499 is a wasteful number, since it uses less digits than its factorization.

2116646662499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482018.

The product of its digits is 40310784, while the sum is 62.

The spelling of 2116646662499 in words is "two trillion, one hundred sixteen billion, six hundred forty-six million, six hundred sixty-two thousand, four hundred ninety-nine".