718481384815 has 64 divisors (see below), whose sum is σ = 919822417920. Its totient is φ = 537861888000.

The previous prime is 718481384783. The next prime is 718481384837. The reversal of 718481384815 is 518483184817.

It is not a de Polignac number, because 718481384815 - 2⁵ = 718481384783 is a prime.

It is a super-2 number, since 2×718481384815² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 718481384815.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 417478155 + ... + 417479875.

It is an arithmetic number, because the mean of its divisors is an integer number (14372225280).

Almost surely, 2^718481384815 is an apocalyptic number.

718481384815 is a deficient number, since it is larger than the sum of its proper divisors (201341033105).

718481384815 is a wasteful number, since it uses less digits than its factorization.

718481384815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344.

The product of its digits is 6881280, while the sum is 58.

The spelling of 718481384815 in words is "seven hundred eighteen billion, four hundred eighty-one million, three hundred eighty-four thousand, eight hundred fifteen".