783199245420 has 192 divisors, whose sum is σ = 2554100398080. Its totient is φ = 199020326400.

The previous prime is 783199245391. The next prime is 783199245427. The reversal of 783199245420 is 24542991387.

783199245420 is a `hidden beast` number, since 7 + 8 + 3 + 1 + 9 + 92 + 4 + 542 + 0 = 666.

It is a super-2 number, since 2×783199245420² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (783199245427) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 540685 + ... + 1363355.

It is an arithmetic number, because the mean of its divisors is an integer number (13302606240).

Almost surely, 2^783199245420 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 783199245420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277050199040).

783199245420 is an abundant number, since it is smaller than the sum of its proper divisors (1770901152660).

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

783199245420 is a wasteful number, since it uses less digits than its factorization.

783199245420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822773 (or 822765 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 783199245420 in words is "seven hundred eighty-three billion, one hundred ninety-nine million, two hundred forty-five thousand, four hundred twenty".