718078398847 has 4 divisors (see below), whose sum is σ = 718080646696. Its totient is φ = 718076151000.

The previous prime is 718078398823. The next prime is 718078398853. The reversal of 718078398847 is 748893870817.

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

It is a cyclic number.

It is not a de Polignac number, because 718078398847 - 2¹⁹ = 718077874559 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 (718078395847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545529 + ... + 1316722.

It is an arithmetic number, because the mean of its divisors is an integer number (179520161674).

Almost surely, 2^718078398847 is an apocalyptic number.

718078398847 is a deficient number, since it is larger than the sum of its proper divisors (2247849).

718078398847 is a wasteful number, since it uses less digits than its factorization.

718078398847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247848.

The product of its (nonzero) digits is 151732224, while the sum is 70.

The spelling of 718078398847 in words is "seven hundred eighteen billion, seventy-eight million, three hundred ninety-eight thousand, eight hundred forty-seven".