28426633308613 has 2 divisors, whose sum is σ = 28426633308614. Its totient is φ = 28426633308612.

The previous prime is 28426633308581. The next prime is 28426633308617. The reversal of 28426633308613 is 31680333662482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24945449789764 + 3481183518849 = 4994542^2 + 1865793^2 .

It is a cyclic number.

It is not a de Polignac number, because 28426633308613 - 2⁵ = 28426633308581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28426633308617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14213316654306 + 14213316654307.

It is an arithmetic number, because the mean of its divisors is an integer number (14213316654307).

Almost surely, 2^{28426633308613} is an apocalyptic number.

It is an amenable number.

28426633308613 is a deficient number, since it is larger than the sum of its proper divisors (1).

28426633308613 is an equidigital number, since it uses as much as digits as its factorization.

28426633308613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17915904, while the sum is 55.

The spelling of 28426633308613 in words is "twenty-eight trillion, four hundred twenty-six billion, six hundred thirty-three million, three hundred eight thousand, six hundred thirteen".