6912009812 has 18 divisors (see below), whose sum is σ = 12431782062. Its totient is φ = 3362596704.

The previous prime is 6912009763. The next prime is 6912009827. The reversal of 6912009812 is 2189002196.

It can be written as a sum of positive squares in 3 ways, for example, as 4153029136 + 2758980676 = 64444^2 + 52526^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 625643 + ... + 636594.

It is an arithmetic number, because the mean of its divisors is an integer number (690654559).

Almost surely, 2^6912009812 is an apocalyptic number.

It is an amenable number.

6912009812 is a deficient number, since it is larger than the sum of its proper divisors (5519772250).

6912009812 is a wasteful number, since it uses less digits than its factorization.

6912009812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262315 (or 1262276 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 6912009812 is about 83138.4977732939. The cubic root of 6912009812 is about 1904.8821637259.

The spelling of 6912009812 in words is "six billion, nine hundred twelve million, nine thousand, eight hundred twelve".