28793595631 has 2 divisors, whose sum is σ = 28793595632. Its totient is φ = 28793595630.

The previous prime is 28793595613. The next prime is 28793595643. The reversal of 28793595631 is 13659539782.

Together with previous prime (28793595613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28793595631 - 2¹³ = 28793587439 is a prime.

It is a super-2 number, since 2×28793595631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28793595031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14396797815 + 14396797816.

It is an arithmetic number, because the mean of its divisors is an integer number (14396797816).

Almost surely, 2^28793595631 is an apocalyptic number.

28793595631 is a deficient number, since it is larger than the sum of its proper divisors (1).

28793595631 is an equidigital number, since it uses as much as digits as its factorization.

28793595631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 58.

The spelling of 28793595631 in words is "twenty-eight billion, seven hundred ninety-three million, five hundred ninety-five thousand, six hundred thirty-one".