28297940651 has 2 divisors, whose sum is σ = 28297940652. Its totient is φ = 28297940650.

The previous prime is 28297940639. The next prime is 28297940729. The reversal of 28297940651 is 15604979282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28297940651 - 2¹⁰ = 28297939627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28297940593 and 28297940602.

It is not a weakly prime, because it can be changed into another prime (28297940611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14148970325 + 14148970326.

It is an arithmetic number, because the mean of its divisors is an integer number (14148970326).

Almost surely, 2^28297940651 is an apocalyptic number.

28297940651 is a deficient number, since it is larger than the sum of its proper divisors (1).

28297940651 is an equidigital number, since it uses as much as digits as its factorization.

28297940651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 28297940651 in words is "twenty-eight billion, two hundred ninety-seven million, nine hundred forty thousand, six hundred fifty-one".