2120768663 has 12 divisors (see below), whose sum is σ = 2297911968. Its totient is φ = 1956389760.

The previous prime is 2120768653. The next prime is 2120768669. The reversal of 2120768663 is 3668670212.

It is a happy number.

It is not a de Polignac number, because 2120768663 - 2⁴ = 2120768647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120768663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120768669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362306 + ... + 368112.

It is an arithmetic number, because the mean of its divisors is an integer number (191492664).

Almost surely, 2^2120768663 is an apocalyptic number.

2120768663 is a deficient number, since it is larger than the sum of its proper divisors (177143305).

2120768663 is a wasteful number, since it uses less digits than its factorization.

2120768663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994 (or 7981 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 2120768663 is about 46051.8041231828. The cubic root of 2120768663 is about 1284.7868982008.

The spelling of 2120768663 in words is "two billion, one hundred twenty million, seven hundred sixty-eight thousand, six hundred sixty-three".