28045801623 has 16 divisors (see below), whose sum is σ = 43043920640. Its totient is φ = 15910874496.

The previous prime is 28045801621. The next prime is 28045801703. The reversal of 28045801623 is 32610854082.

It is not a de Polignac number, because 28045801623 - 2¹ = 28045801621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28045801621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4801090 + ... + 4806927.

It is an arithmetic number, because the mean of its divisors is an integer number (2690245040).

Almost surely, 2^28045801623 is an apocalyptic number.

28045801623 is a deficient number, since it is larger than the sum of its proper divisors (14998119017).

28045801623 is a wasteful number, since it uses less digits than its factorization.

28045801623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9608166.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 28045801623 in words is "twenty-eight billion, forty-five million, eight hundred one thousand, six hundred twenty-three".