781822604882 has 54 divisors (see below), whose sum is σ = 1303137183621. Its totient is φ = 351528752960.

The previous prime is 781822604833. The next prime is 781822604897. The reversal of 781822604882 is 288406228187.

It can be written as a sum of positive squares in 2 ways, for example, as 493774641481 + 288047963401 = 702691^2 + 536701^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=625229.

It is a super-2 number, since 2×781822604882² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1554319043 + ... + 1554319545.

Almost surely, 2^781822604882 is an apocalyptic number.

781822604882 is a deficient number, since it is larger than the sum of its proper divisors (521314578739).

781822604882 is an equidigital number, since it uses as much as digits as its factorization.

781822604882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 56.

The spelling of 781822604882 in words is "seven hundred eighty-one billion, eight hundred twenty-two million, six hundred four thousand, eight hundred eighty-two".