28000277780303 has 4 divisors (see below), whose sum is σ = 28337630524728. Its totient is φ = 27662925035880.

The previous prime is 28000277780297. The next prime is 28000277780327. The reversal of 28000277780303 is 30308777200082.

It is a happy number.

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 28000277780303 - 2²⁰ = 28000276731727 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 (28000277780353) 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, 168676372088 + ... + 168676372253.

It is an arithmetic number, because the mean of its divisors is an integer number (7084407631182).

Almost surely, 2^{28000277780303} is an apocalyptic number.

28000277780303 is a deficient number, since it is larger than the sum of its proper divisors (337352744425).

28000277780303 is an equidigital number, since it uses as much as digits as its factorization.

28000277780303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337352744424.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 28000277780303 in words is "twenty-eight trillion, two hundred seventy-seven million, seven hundred eighty thousand, three hundred three".