28112476251 has 4 divisors (see below), whose sum is σ = 37483301672. Its totient is φ = 18741650832.

The previous prime is 28112476229. The next prime is 28112476267. The reversal of 28112476251 is 15267421182.

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

It is not a de Polignac number, because 28112476251 - 2⁹ = 28112475739 is a prime.

It is a super-2 number, since 2×28112476251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28112476211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4685412706 + ... + 4685412711.

It is an arithmetic number, because the mean of its divisors is an integer number (9370825418).

Almost surely, 2^28112476251 is an apocalyptic number.

28112476251 is a deficient number, since it is larger than the sum of its proper divisors (9370825421).

28112476251 is an equidigital number, since it uses as much as digits as its factorization.

28112476251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9370825420.

The product of its digits is 53760, while the sum is 39.

The spelling of 28112476251 in words is "twenty-eight billion, one hundred twelve million, four hundred seventy-six thousand, two hundred fifty-one".