78517445422 has 16 divisors (see below), whose sum is σ = 131209525440. Its totient is φ = 34989206112.

The previous prime is 78517445411. The next prime is 78517445443. The reversal of 78517445422 is 22454471587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52066518 + ... + 52068025.

It is an arithmetic number, because the mean of its divisors is an integer number (8200595340).

Almost surely, 2^78517445422 is an apocalyptic number.

78517445422 is a deficient number, since it is larger than the sum of its proper divisors (52692080018).

78517445422 is a wasteful number, since it uses less digits than its factorization.

78517445422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104134587.

The product of its digits is 2508800, while the sum is 49.

The spelling of 78517445422 in words is "seventy-eight billion, five hundred seventeen million, four hundred forty-five thousand, four hundred twenty-two".