7617971942879 has 4 divisors (see below), whose sum is σ = 7617983308176. Its totient is φ = 7617960577584.

The previous prime is 7617971942869. The next prime is 7617971942887. The reversal of 7617971942879 is 9782491797167.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7617971942879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7617971942869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4609694 + ... + 6040299.

It is an arithmetic number, because the mean of its divisors is an integer number (1904495827044).

Almost surely, 2^{7617971942879} is an apocalyptic number.

7617971942879 is a deficient number, since it is larger than the sum of its proper divisors (11365297).

7617971942879 is a wasteful number, since it uses less digits than its factorization.

7617971942879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11365296.

The product of its digits is 672126336, while the sum is 77.

The spelling of 7617971942879 in words is "seven trillion, six hundred seventeen billion, nine hundred seventy-one million, nine hundred forty-two thousand, eight hundred seventy-nine".