77582382687 has 8 divisors (see below), whose sum is σ = 114936863280. Its totient is φ = 51721588440.

The previous prime is 77582382649. The next prime is 77582382721. The reversal of 77582382687 is 78628328577.

It is not a de Polignac number, because 77582382687 - 2¹⁸ = 77582120543 is a prime.

It is a super-2 number, since 2×77582382687² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77582302687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436710764 + ... + 1436710817.

It is an arithmetic number, because the mean of its divisors is an integer number (14367107910).

Almost surely, 2^77582382687 is an apocalyptic number.

77582382687 is a deficient number, since it is larger than the sum of its proper divisors (37354480593).

77582382687 is a wasteful number, since it uses less digits than its factorization.

77582382687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873421590 (or 2873421584 counting only the distinct ones).

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

The spelling of 77582382687 in words is "seventy-seven billion, five hundred eighty-two million, three hundred eighty-two thousand, six hundred eighty-seven".