28700653717 has 2 divisors, whose sum is σ = 28700653718. Its totient is φ = 28700653716.

The previous prime is 28700653693. The next prime is 28700653759. The reversal of 28700653717 is 71735600782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20425840561 + 8274813156 = 142919^2 + 90966^2 .

It is a cyclic number.

It is not a de Polignac number, because 28700653717 - 2⁷ = 28700653589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28700653777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14350326858 + 14350326859.

It is an arithmetic number, because the mean of its divisors is an integer number (14350326859).

Almost surely, 2^28700653717 is an apocalyptic number.

It is an amenable number.

28700653717 is a deficient number, since it is larger than the sum of its proper divisors (1).

28700653717 is an equidigital number, since it uses as much as digits as its factorization.

28700653717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 46.

It can be divided in two parts, 2870065 and 3717, that added together give a palindrome (2873782).

The spelling of 28700653717 in words is "twenty-eight billion, seven hundred million, six hundred fifty-three thousand, seven hundred seventeen".