84028451038405 has 16 divisors (see below), whose sum is σ = 100993634589168. Its totient is φ = 67116436480000.

The previous prime is 84028451038403. The next prime is 84028451038421. The reversal of 84028451038405 is 50483015482048.

It can be written as a sum of positive squares in 8 ways, for example, as 6341537734081 + 77686913304324 = 2518241^2 + 8814018^2 .

It is not a de Polignac number, because 84028451038405 - 2¹ = 84028451038403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84028451038403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162366555 + ... + 162883255.

It is an arithmetic number, because the mean of its divisors is an integer number (6312102161823).

Almost surely, 2^{84028451038405} is an apocalyptic number.

It is an amenable number.

84028451038405 is a deficient number, since it is larger than the sum of its proper divisors (16965183550763).

84028451038405 is a wasteful number, since it uses less digits than its factorization.

84028451038405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568088.

The product of its (nonzero) digits is 4915200, while the sum is 52.

The spelling of 84028451038405 in words is "eighty-four trillion, twenty-eight billion, four hundred fifty-one million, thirty-eight thousand, four hundred five".