2116563940 has 24 divisors (see below), whose sum is σ = 4449517632. Its totient is φ = 845724000.

The previous prime is 2116563907. The next prime is 2116563941. The reversal of 2116563940 is 493656112.

It is a self number, because there is not a number n which added to its sum of digits gives 2116563940.

It is not an unprimeable number, because it can be changed into a prime (2116563941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36936 + ... + 74815.

It is an arithmetic number, because the mean of its divisors is an integer number (185396568).

Almost surely, 2^2116563940 is an apocalyptic number.

2116563940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2116563940 is an abundant number, since it is smaller than the sum of its proper divisors (2332953692).

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

2116563940 is a wasteful number, since it uses less digits than its factorization.

2116563940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112707 (or 112705 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2116563940 is about 46006.1293742475. The cubic root of 2116563940 is about 1283.9372460216.

The spelling of 2116563940 in words is "two billion, one hundred sixteen million, five hundred sixty-three thousand, nine hundred forty".