76786982640 has 200 divisors, whose sum is σ = 275296272768. Its totient is φ = 19815943680.

The previous prime is 76786982633. The next prime is 76786982651. The reversal of 76786982640 is 4628968767.

It is a super-2 number, since 2×76786982640² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9754 + ... + 392006.

Almost surely, 2^76786982640 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 76786982640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137648136384).

76786982640 is an abundant number, since it is smaller than the sum of its proper divisors (198509290128).

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

76786982640 is a wasteful number, since it uses less digits than its factorization.

76786982640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382309 (or 382294 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 76786982640 in words is "seventy-six billion, seven hundred eighty-six million, nine hundred eighty-two thousand, six hundred forty".