28126695251 has 2 divisors, whose sum is σ = 28126695252. Its totient is φ = 28126695250.

The previous prime is 28126695217. The next prime is 28126695263. The reversal of 28126695251 is 15259662182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28126695251 - 2¹⁸ = 28126433107 is a prime.

It is a super-2 number, since 2×28126695251² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28126695196 and 28126695205.

It is not a weakly prime, because it can be changed into another prime (28126698251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14063347625 + 14063347626.

It is an arithmetic number, because the mean of its divisors is an integer number (14063347626).

Almost surely, 2^28126695251 is an apocalyptic number.

28126695251 is a deficient number, since it is larger than the sum of its proper divisors (1).

28126695251 is an equidigital number, since it uses as much as digits as its factorization.

28126695251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 47.

The spelling of 28126695251 in words is "twenty-eight billion, one hundred twenty-six million, six hundred ninety-five thousand, two hundred fifty-one".