7811077068 has 36 divisors (see below), whose sum is σ = 20381594688. Its totient is φ = 2519701920.

The previous prime is 7811077051. The next prime is 7811077093. The reversal of 7811077068 is 8607701187.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×7811077068² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3498471 + ... + 3500702.

It is an arithmetic number, because the mean of its divisors is an integer number (566155408).

Almost surely, 2^7811077068 is an apocalyptic number.

It is an amenable number.

7811077068 is an abundant number, since it is smaller than the sum of its proper divisors (12570517620).

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

7811077068 is a wasteful number, since it uses less digits than its factorization.

7811077068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999214 (or 6999209 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 45.

The square root of 7811077068 is about 88380.2979628378. The cubic root of 7811077068 is about 1984.1308402455.

The spelling of 7811077068 in words is "seven billion, eight hundred eleven million, seventy-seven thousand, sixty-eight".