445765685218 has 48 divisors (see below), whose sum is σ = 794619496440. Its totient is φ = 186934535424.

The previous prime is 445765685213. The next prime is 445765685219. The reversal of 445765685218 is 812586567544.

It can be written as a sum of positive squares in 4 ways, for example, as 309528660609 + 136237024609 = 556353^2 + 369103^2 .

It is a super-2 number, since 2×445765685218² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445765685213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1822318 + ... + 2052406.

Almost surely, 2^445765685218 is an apocalyptic number.

445765685218 is a deficient number, since it is larger than the sum of its proper divisors (348853811222).

445765685218 is a wasteful number, since it uses less digits than its factorization.

445765685218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230531 (or 230524 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 61.

The spelling of 445765685218 in words is "four hundred forty-five billion, seven hundred sixty-five million, six hundred eighty-five thousand, two hundred eighteen".