7166878786617 has 8 divisors (see below), whose sum is σ = 10424550962400. Its totient is φ = 4343562900960.

The previous prime is 7166878786589. The next prime is 7166878786651.

7166878786617 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7166878786617 - 2²⁷ = 7166744568889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7166878786667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108589072492 + ... + 108589072557.

It is an arithmetic number, because the mean of its divisors is an integer number (1303068870300).

Almost surely, 2^{7166878786617} is an apocalyptic number.

It is an amenable number.

7166878786617 is a deficient number, since it is larger than the sum of its proper divisors (3257672175783).

7166878786617 is a wasteful number, since it uses less digits than its factorization.

7166878786617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217178145063.

The product of its digits is 1593188352, while the sum is 78.

The spelling of 7166878786617 in words is "seven trillion, one hundred sixty-six billion, eight hundred seventy-eight million, seven hundred eighty-six thousand, six hundred seventeen".