28531137105603 has 80 divisors (see below), whose sum is σ = 46843366711680. Its totient is φ = 17162182540800.

The previous prime is 28531137105521. The next prime is 28531137105607. The reversal of 28531137105603 is 30650173113582.

28531137105603 is a `hidden beast` number, since 2 + 8 + 5 + 3 + 1 + 1 + 37 + 1 + 0 + 5 + 603 = 666.

It is not a de Polignac number, because 28531137105603 - 2²² = 28531132911299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28531137105607) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 447929988 + ... + 447993678.

It is an arithmetic number, because the mean of its divisors is an integer number (585542083896).

Almost surely, 2^{28531137105603} is an apocalyptic number.

28531137105603 is a deficient number, since it is larger than the sum of its proper divisors (18312229606077).

28531137105603 is a wasteful number, since it uses less digits than its factorization.

28531137105603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67470 (or 67461 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 28531137105603 in words is "twenty-eight trillion, five hundred thirty-one billion, one hundred thirty-seven million, one hundred five thousand, six hundred three".