518946785450 has 24 divisors (see below), whose sum is σ = 965473604172. Its totient is φ = 207528696320.

The previous prime is 518946785389. The next prime is 518946785453. The reversal of 518946785450 is 54587649815.

It can be written as a sum of positive squares in 6 ways, for example, as 51721220929 + 467225564521 = 227423^2 + 683539^2 .

It is a super-2 number, since 2×518946785450² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (518946785453) 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 11 ways as a sum of consecutive naturals, for example, 1040519 + ... + 1456218.

Almost surely, 2^518946785450 is an apocalyptic number.

518946785450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

518946785450 is a deficient number, since it is larger than the sum of its proper divisors (446526818722).

518946785450 is a wasteful number, since it uses less digits than its factorization.

518946785450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500906 (or 2500901 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 62.

The spelling of 518946785450 in words is "five hundred eighteen billion, nine hundred forty-six million, seven hundred eighty-five thousand, four hundred fifty".