28527116831 has 4 divisors (see below), whose sum is σ = 28574742000. Its totient is φ = 28479491664.

The previous prime is 28527116791. The next prime is 28527116837. The reversal of 28527116831 is 13861172582.

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 28527116831 - 2¹⁰ = 28527115807 is a prime.

It is a super-2 number, since 2×28527116831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28527116837) 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, 23811686 + ... + 23812883.

It is an arithmetic number, because the mean of its divisors is an integer number (7143685500).

Almost surely, 2^28527116831 is an apocalyptic number.

28527116831 is a deficient number, since it is larger than the sum of its proper divisors (47625169).

28527116831 is an equidigital number, since it uses as much as digits as its factorization.

28527116831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47625168.

The product of its digits is 161280, while the sum is 44.

The spelling of 28527116831 in words is "twenty-eight billion, five hundred twenty-seven million, one hundred sixteen thousand, eight hundred thirty-one".