28114368637 has 4 divisors (see below), whose sum is σ = 28874216476. Its totient is φ = 27354520800.

The previous prime is 28114368599. The next prime is 28114368707. The reversal of 28114368637 is 73686341182.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9786353476 + 18328015161 = 98926^2 + 135381^2 .

It is a cyclic number.

It is not a de Polignac number, because 28114368637 - 2¹¹ = 28114366589 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 (28114468637) 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, 379923864 + ... + 379923937.

It is an arithmetic number, because the mean of its divisors is an integer number (7218554119).

Almost surely, 2^28114368637 is an apocalyptic number.

It is an amenable number.

28114368637 is a deficient number, since it is larger than the sum of its proper divisors (759847839).

28114368637 is an equidigital number, since it uses as much as digits as its factorization.

28114368637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759847838.

The product of its digits is 1161216, while the sum is 49.

The spelling of 28114368637 in words is "twenty-eight billion, one hundred fourteen million, three hundred sixty-eight thousand, six hundred thirty-seven".