28076723251 has 2 divisors, whose sum is σ = 28076723252. Its totient is φ = 28076723250.

The previous prime is 28076723249. The next prime is 28076723267. The reversal of 28076723251 is 15232767082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28076723251 - 2¹ = 28076723249 is a prime.

Together with 28076723249, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28076723198 and 28076723207.

It is not a weakly prime, because it can be changed into another prime (28076729251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14038361625 + 14038361626.

It is an arithmetic number, because the mean of its divisors is an integer number (14038361626).

Almost surely, 2^28076723251 is an apocalyptic number.

28076723251 is a deficient number, since it is larger than the sum of its proper divisors (1).

28076723251 is an equidigital number, since it uses as much as digits as its factorization.

28076723251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 28076723251 in words is "twenty-eight billion, seventy-six million, seven hundred twenty-three thousand, two hundred fifty-one".