78843267025917 has 16 divisors (see below), whose sum is σ = 110809427688960. Its totient is φ = 49727252730672.

The previous prime is 78843267025843. The next prime is 78843267025927. The reversal of 78843267025917 is 71952076234887.

It is not a de Polignac number, because 78843267025917 - 2¹² = 78843267021821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78843267025927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951275763 + ... + 951358640.

It is an arithmetic number, because the mean of its divisors is an integer number (6925589230560).

It is a 1-persistent number, because it is pandigital, but 2⋅78843267025917 = 157686534051834 is not.

Almost surely, 2^{78843267025917} is an apocalyptic number.

It is an amenable number.

78843267025917 is a deficient number, since it is larger than the sum of its proper divisors (31966160663043).

78843267025917 is a wasteful number, since it uses less digits than its factorization.

78843267025917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902635152.

The product of its (nonzero) digits is 284497920, while the sum is 69.

The spelling of 78843267025917 in words is "seventy-eight trillion, eight hundred forty-three billion, two hundred sixty-seven million, twenty-five thousand, nine hundred seventeen".