26046622421 has 2 divisors, whose sum is σ = 26046622422. Its totient is φ = 26046622420.

The previous prime is 26046622411. The next prime is 26046622423. The reversal of 26046622421 is 12422664062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18992974225 + 7053648196 = 137815^2 + 83986^2 .

It is a cyclic number.

It is not a de Polignac number, because 26046622421 - 2²² = 26042428117 is a prime.

Together with 26046622423, 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 (26046622423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13023311210 + 13023311211.

It is an arithmetic number, because the mean of its divisors is an integer number (13023311211).

Almost surely, 2^26046622421 is an apocalyptic number.

It is an amenable number.

26046622421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26046622421 is an equidigital number, since it uses as much as digits as its factorization.

26046622421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 26046622421 in words is "twenty-six billion, forty-six million, six hundred twenty-two thousand, four hundred twenty-one".