26401520267 has 2 divisors, whose sum is σ = 26401520268. Its totient is φ = 26401520266.

The previous prime is 26401520213. The next prime is 26401520273. The reversal of 26401520267 is 76202510462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26401520267 is a prime.

It is a super-3 number, since 3×26401520267³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (26401520287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13200760133 + 13200760134.

It is an arithmetic number, because the mean of its divisors is an integer number (13200760134).

Almost surely, 2^26401520267 is an apocalyptic number.

26401520267 is a deficient number, since it is larger than the sum of its proper divisors (1).

26401520267 is an equidigital number, since it uses as much as digits as its factorization.

26401520267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 26401520267 in words is "twenty-six billion, four hundred one million, five hundred twenty thousand, two hundred sixty-seven".