77882531444 has 12 divisors (see below), whose sum is σ = 140691024768. Its totient is φ = 37685095800.

The previous prime is 77882531431. The next prime is 77882531459. The reversal of 77882531444 is 44413528877.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314042342 + ... + 314042589.

It is an arithmetic number, because the mean of its divisors is an integer number (11724252064).

Almost surely, 2^77882531444 is an apocalyptic number.

It is an amenable number.

77882531444 is a deficient number, since it is larger than the sum of its proper divisors (62808493324).

77882531444 is a wasteful number, since it uses less digits than its factorization.

77882531444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628084966 (or 628084964 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 53.

The spelling of 77882531444 in words is "seventy-seven billion, eight hundred eighty-two million, five hundred thirty-one thousand, four hundred forty-four".