2116985756 has 12 divisors (see below), whose sum is σ = 3705066792. Its totient is φ = 1058395248.

The previous prime is 2116985729. The next prime is 2116985777. The reversal of 2116985756 is 6575896112.

It is a super-2 number, since 2×2116985756² = 8963257382213783072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48731 + ... + 81293.

It is an arithmetic number, because the mean of its divisors is an integer number (308755566).

Almost surely, 2^2116985756 is an apocalyptic number.

It is an amenable number.

2116985756 is a deficient number, since it is larger than the sum of its proper divisors (1588081036).

2116985756 is a wasteful number, since it uses less digits than its factorization.

2116985756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48820 (or 48818 counting only the distinct ones).

The product of its digits is 907200, while the sum is 50.

The square root of 2116985756 is about 46010.7134915337. The cubic root of 2116985756 is about 1284.0225335150.

The spelling of 2116985756 in words is "two billion, one hundred sixteen million, nine hundred eighty-five thousand, seven hundred fifty-six".