77856727467 has 32 divisors (see below), whose sum is σ = 106600919040. Its totient is φ = 50517522720.

The previous prime is 77856727453. The next prime is 77856727541. The reversal of 77856727467 is 76472765877.

It is not a de Polignac number, because 77856727467 - 2⁷ = 77856727339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77856727398 and 77856727407.

It is not an unprimeable number, because it can be changed into a prime (77856720467) 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 31 ways as a sum of consecutive naturals, for example, 87774898 + ... + 87775784.

It is an arithmetic number, because the mean of its divisors is an integer number (3331278720).

Almost surely, 2^77856727467 is an apocalyptic number.

77856727467 is a deficient number, since it is larger than the sum of its proper divisors (28744191573).

77856727467 is a wasteful number, since it uses less digits than its factorization.

77856727467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583.

The product of its digits is 193616640, while the sum is 66.

The spelling of 77856727467 in words is "seventy-seven billion, eight hundred fifty-six million, seven hundred twenty-seven thousand, four hundred sixty-seven".