6311994884 has 24 divisors (see below), whose sum is σ = 12305881560. Its totient is φ = 2812771584.

The previous prime is 6311994881. The next prime is 6311994917. The reversal of 6311994884 is 4884991136.

It can be written as a sum of positive squares in 4 ways, for example, as 91202500 + 6220792384 = 9550^2 + 78872^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6311994881) 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, 2091329 + ... + 2094344.

It is an arithmetic number, because the mean of its divisors is an integer number (512745065).

Almost surely, 2^6311994884 is an apocalyptic number.

It is an amenable number.

6311994884 is a deficient number, since it is larger than the sum of its proper divisors (5993886676).

6311994884 is a wasteful number, since it uses less digits than its factorization.

6311994884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185719 (or 4185717 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 6311994884 is about 79448.0640670369. The cubic root of 6311994884 is about 1848.0861516810.

The spelling of 6311994884 in words is "six billion, three hundred eleven million, nine hundred ninety-four thousand, eight hundred eighty-four".