783820221144 has 48 divisors (see below), whose sum is σ = 2081598702600. Its totient is φ = 245904380928.

The previous prime is 783820221139. The next prime is 783820221193. The reversal of 783820221144 is 441122028387.

It is a super-2 number, since 2×783820221144² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 783820221096 and 783820221105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56496829 + ... + 56510700.

Almost surely, 2^783820221144 is an apocalyptic number.

It is an amenable number.

783820221144 is an abundant number, since it is smaller than the sum of its proper divisors (1297778481456).

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

783820221144 is a wasteful number, since it uses less digits than its factorization.

783820221144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113007572 (or 113007551 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 783820221144 in words is "seven hundred eighty-three billion, eight hundred twenty million, two hundred twenty-one thousand, one hundred forty-four".