78444356746 has 16 divisors (see below), whose sum is σ = 134514360576. Its totient is φ = 33609429936.

The previous prime is 78444356723. The next prime is 78444356777. The reversal of 78444356746 is 64765344487.

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, 747346 + ... + 845821.

It is an arithmetic number, because the mean of its divisors is an integer number (8407147536).

Almost surely, 2^78444356746 is an apocalyptic number.

78444356746 is a deficient number, since it is larger than the sum of its proper divisors (56070003830).

78444356746 is a wasteful number, since it uses less digits than its factorization.

78444356746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596693.

The product of its digits is 54190080, while the sum is 58.

The spelling of 78444356746 in words is "seventy-eight billion, four hundred forty-four million, three hundred fifty-six thousand, seven hundred forty-six".