26900898217 has 2 divisors, whose sum is σ = 26900898218. Its totient is φ = 26900898216.

The previous prime is 26900898071. The next prime is 26900898259. The reversal of 26900898217 is 71289800962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25688396176 + 1212502041 = 160276^2 + 34821^2 .

It is a cyclic number.

It is not a de Polignac number, because 26900898217 - 2¹⁵ = 26900865449 is a prime.

It is not a weakly prime, because it can be changed into another prime (26900898317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13450449108 + 13450449109.

It is an arithmetic number, because the mean of its divisors is an integer number (13450449109).

Almost surely, 2^26900898217 is an apocalyptic number.

It is an amenable number.

26900898217 is a deficient number, since it is larger than the sum of its proper divisors (1).

26900898217 is an equidigital number, since it uses as much as digits as its factorization.

26900898217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 26900898217 in words is "twenty-six billion, nine hundred million, eight hundred ninety-eight thousand, two hundred seventeen".