7867791279 has 8 divisors (see below), whose sum is σ = 11655987120. Its totient is φ = 5245194168.

The previous prime is 7867791277. The next prime is 7867791343. The reversal of 7867791279 is 9721977687.

It is not a de Polignac number, because 7867791279 - 2¹ = 7867791277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7867791271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145699812 + ... + 145699865.

It is an arithmetic number, because the mean of its divisors is an integer number (1456998390).

Almost surely, 2^7867791279 is an apocalyptic number.

7867791279 is a deficient number, since it is larger than the sum of its proper divisors (3788195841).

7867791279 is a wasteful number, since it uses less digits than its factorization.

7867791279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291399686 (or 291399680 counting only the distinct ones).

The product of its digits is 18670176, while the sum is 63.

The square root of 7867791279 is about 88700.5709057163. The cubic root of 7867791279 is about 1988.9213516718.

The spelling of 7867791279 in words is "seven billion, eight hundred sixty-seven million, seven hundred ninety-one thousand, two hundred seventy-nine".