77842807244 has 12 divisors (see below), whose sum is σ = 137204949000. Its totient is φ = 38641393248.

The previous prime is 77842807241. The next prime is 77842807253. The reversal of 77842807244 is 44270824877.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77842807241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70001969 + ... + 70003080.

It is an arithmetic number, because the mean of its divisors is an integer number (11433745750).

Almost surely, 2^77842807244 is an apocalyptic number.

It is an amenable number.

77842807244 is a deficient number, since it is larger than the sum of its proper divisors (59362141756).

77842807244 is a wasteful number, since it uses less digits than its factorization.

77842807244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140005192 (or 140005190 counting only the distinct ones).

The product of its (nonzero) digits is 5619712, while the sum is 53.

The spelling of 77842807244 in words is "seventy-seven billion, eight hundred forty-two million, eight hundred seven thousand, two hundred forty-four".