2116646662508 has 24 divisors (see below), whose sum is σ = 4233325926144. Its totient is φ = 907127298000.

The previous prime is 2116646662489. The next prime is 2116646662517. The reversal of 2116646662508 is 8052666466112.

It is a self number, because there is not a number n which added to its sum of digits gives 2116646662508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5280983 + ... + 5667633.

It is an arithmetic number, because the mean of its divisors is an integer number (176388580256).

Almost surely, 2^{2116646662508} is an apocalyptic number.

2116646662508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2116646662508 is an abundant number, since it is smaller than the sum of its proper divisors (2116679263636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2116646662508 is a wasteful number, since it uses less digits than its factorization.

2116646662508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582173 (or 582171 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 2116646662508 in words is "two trillion, one hundred sixteen billion, six hundred forty-six million, six hundred sixty-two thousand, five hundred eight".