28555542763 has 4 divisors (see below), whose sum is σ = 31151501208. Its totient is φ = 25959584320.

The previous prime is 28555542761. The next prime is 28555542767. The reversal of 28555542763 is 36724555582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28555542763 - 2¹ = 28555542761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28555542763.

It is not an unprimeable number, because it can be changed into a prime (28555542761) 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, 1297979206 + ... + 1297979227.

It is an arithmetic number, because the mean of its divisors is an integer number (7787875302).

Almost surely, 2^28555542763 is an apocalyptic number.

28555542763 is a deficient number, since it is larger than the sum of its proper divisors (2595958445).

28555542763 is a wasteful number, since it uses less digits than its factorization.

28555542763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595958444.

The product of its digits is 10080000, while the sum is 52.

The spelling of 28555542763 in words is "twenty-eight billion, five hundred fifty-five million, five hundred forty-two thousand, seven hundred sixty-three".