718385215864 has 32 divisors (see below), whose sum is σ = 1369476033120. Its totient is φ = 353220811776.

The previous prime is 718385215829. The next prime is 718385215921. The reversal of 718385215864 is 468512583817.

It is a junction number, because it is equal to n+sod(n) for n = 718385215799 and 718385215808.

It is a congruent number.

It is an unprimeable number.

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, 1628284 + ... + 2021899.

It is an arithmetic number, because the mean of its divisors is an integer number (42796126035).

Almost surely, 2^718385215864 is an apocalyptic number.

It is an amenable number.

718385215864 is a deficient number, since it is larger than the sum of its proper divisors (651090817256).

718385215864 is a wasteful number, since it uses less digits than its factorization.

718385215864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650599 (or 3650595 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 58.

The spelling of 718385215864 in words is "seven hundred eighteen billion, three hundred eighty-five million, two hundred fifteen thousand, eight hundred sixty-four".