518168076745 has 64 divisors (see below), whose sum is σ = 723524825088. Its totient is φ = 352512160000.

The previous prime is 518168076739. The next prime is 518168076749. The reversal of 518168076745 is 547670861815.

It is not a de Polignac number, because 518168076745 - 2⁹ = 518168076233 is a prime.

It is a super-2 number, since 2×518168076745² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518168076745.

It is not an unprimeable number, because it can be changed into a prime (518168076749) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 20838570 + ... + 20863420.

It is an arithmetic number, because the mean of its divisors is an integer number (11305075392).

Almost surely, 2^518168076745 is an apocalyptic number.

518168076745 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

518168076745 is a deficient number, since it is larger than the sum of its proper divisors (205356748343).

518168076745 is a wasteful number, since it uses less digits than its factorization.

518168076745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25254.

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 518168076745 in words is "five hundred eighteen billion, one hundred sixty-eight million, seventy-six thousand, seven hundred forty-five".