84028788447 has 12 divisors (see below), whose sum is σ = 118245498840. Its totient is φ = 53070813072.

The previous prime is 84028788443. The next prime is 84028788457. The reversal of 84028788447 is 74488782048.

It is not a de Polignac number, because 84028788447 - 2² = 84028788443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84028788443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38793372 + ... + 38795537.

It is an arithmetic number, because the mean of its divisors is an integer number (9853791570).

Almost surely, 2^84028788447 is an apocalyptic number.

84028788447 is a deficient number, since it is larger than the sum of its proper divisors (34216710393).

84028788447 is a wasteful number, since it uses less digits than its factorization.

84028788447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77588950 (or 77588931 counting only the distinct ones).

The product of its (nonzero) digits is 25690112, while the sum is 60.

The spelling of 84028788447 in words is "eighty-four billion, twenty-eight million, seven hundred eighty-eight thousand, four hundred forty-seven".