28677265693 has 4 divisors (see below), whose sum is σ = 28677628800. Its totient is φ = 28676902588.

The previous prime is 28677265681. The next prime is 28677265753. The reversal of 28677265693 is 39656277682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28677265693 - 2¹³ = 28677257501 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 (28677265613) 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, 7405 + ... + 239602.

It is an arithmetic number, because the mean of its divisors is an integer number (7169407200).

Almost surely, 2^28677265693 is an apocalyptic number.

It is an amenable number.

28677265693 is a deficient number, since it is larger than the sum of its proper divisors (363107).

28677265693 is a wasteful number, since it uses less digits than its factorization.

28677265693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363106.

The product of its digits is 45722880, while the sum is 61.

The spelling of 28677265693 in words is "twenty-eight billion, six hundred seventy-seven million, two hundred sixty-five thousand, six hundred ninety-three".