26900646251 has 2 divisors, whose sum is σ = 26900646252. Its totient is φ = 26900646250.

The previous prime is 26900646247. The next prime is 26900646271. The reversal of 26900646251 is 15264600962.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26900646251 - 2² = 26900646247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26900646199 and 26900646208.

It is not a weakly prime, because it can be changed into another prime (26900646271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13450323125 + 13450323126.

It is an arithmetic number, because the mean of its divisors is an integer number (13450323126).

Almost surely, 2^26900646251 is an apocalyptic number.

26900646251 is a deficient number, since it is larger than the sum of its proper divisors (1).

26900646251 is an equidigital number, since it uses as much as digits as its factorization.

26900646251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 26900646251 in words is "twenty-six billion, nine hundred million, six hundred forty-six thousand, two hundred fifty-one".