782296865820 has 144 divisors (see below), whose sum is σ = 2383969075488. Its totient is φ = 207647193600.

The previous prime is 782296865803. The next prime is 782296865843. The reversal of 782296865820 is 28568692287.

It is a super-2 number, since 2×782296865820² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41822470 + ... + 41841170.

It is an arithmetic number, because the mean of its divisors is an integer number (16555340802).

Almost surely, 2^782296865820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 782296865820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191984537744).

782296865820 is an abundant number, since it is smaller than the sum of its proper divisors (1601672209668).

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

782296865820 is a wasteful number, since it uses less digits than its factorization.

782296865820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19780 (or 19775 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 782296865820 in words is "seven hundred eighty-two billion, two hundred ninety-six million, eight hundred sixty-five thousand, eight hundred twenty".