787878304056 has 128 divisors (see below), whose sum is σ = 2196571392000. Its totient is φ = 261665030016.

The previous prime is 787878304043. The next prime is 787878304093. The reversal of 787878304056 is 650403878787.

787878304056 is a `hidden beast` number, since 78 + 7 + 87 + 83 + 0 + 405 + 6 = 666.

It is a super-2 number, since 2×787878304056² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 787878303984 and 787878304002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97421245 + ... + 97429331.

It is an arithmetic number, because the mean of its divisors is an integer number (17160714000).

Almost surely, 2^787878304056 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 787878304056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098285696000).

787878304056 is an abundant number, since it is smaller than the sum of its proper divisors (1408693087944).

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

787878304056 is a wasteful number, since it uses less digits than its factorization.

787878304056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9698 (or 9688 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 63.

The spelling of 787878304056 in words is "seven hundred eighty-seven billion, eight hundred seventy-eight million, three hundred four thousand, fifty-six".