782331513872 has 20 divisors (see below), whose sum is σ = 1604930091516. Its totient is φ = 368156006400.

The previous prime is 782331513851. The next prime is 782331513913. The reversal of 782331513872 is 278315133287.

It can be written as a sum of positive squares in 2 ways, for example, as 651565382416 + 130766131456 = 807196^2 + 361616^2 .

It is a super-2 number, since 2×782331513872² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 782331513872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438109129 + ... + 1438109672.

Almost surely, 2^782331513872 is an apocalyptic number.

It is an amenable number.

782331513872 is an abundant number, since it is smaller than the sum of its proper divisors (822598577644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

782331513872 is a wasteful number, since it uses less digits than its factorization.

782331513872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876218826 (or 2876218820 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The spelling of 782331513872 in words is "seven hundred eighty-two billion, three hundred thirty-one million, five hundred thirteen thousand, eight hundred seventy-two".