27298256831 has 4 divisors (see below), whose sum is σ = 27303822600. Its totient is φ = 27292691064.

The previous prime is 27298256819. The next prime is 27298256833. The reversal of 27298256831 is 13865289272.

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 27298256831 - 2²² = 27294062527 is a prime.

It is a super-2 number, since 2×27298256831² (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 (27298256833) 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, 2775521 + ... + 2785338.

It is an arithmetic number, because the mean of its divisors is an integer number (6825955650).

Almost surely, 2^27298256831 is an apocalyptic number.

27298256831 is a deficient number, since it is larger than the sum of its proper divisors (5565769).

27298256831 is an equidigital number, since it uses as much as digits as its factorization.

27298256831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565768.

The product of its digits is 2903040, while the sum is 53.

The spelling of 27298256831 in words is "twenty-seven billion, two hundred ninety-eight million, two hundred fifty-six thousand, eight hundred thirty-one".