26606221421357 has 2 divisors, whose sum is σ = 26606221421358. Its totient is φ = 26606221421356.

The previous prime is 26606221421347. The next prime is 26606221421359. The reversal of 26606221421357 is 75312412260662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20273217651241 + 6333003770116 = 4502579^2 + 2516546^2 .

It is a cyclic number.

It is not a de Polignac number, because 26606221421357 - 2⁴ = 26606221421341 is a prime.

It is a super-2 number, since 2×26606221421357² (a number of 28 digits) contains 22 as substring.

Together with 26606221421359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26606221421359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13303110710678 + 13303110710679.

It is an arithmetic number, because the mean of its divisors is an integer number (13303110710679).

Almost surely, 2^{26606221421357} is an apocalyptic number.

It is an amenable number.

26606221421357 is a deficient number, since it is larger than the sum of its proper divisors (1).

26606221421357 is an equidigital number, since it uses as much as digits as its factorization.

26606221421357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 26606221421357 in words is "twenty-six trillion, six hundred six billion, two hundred twenty-one million, four hundred twenty-one thousand, three hundred fifty-seven".