26714991421 has 2 divisors, whose sum is σ = 26714991422. Its totient is φ = 26714991420.

The previous prime is 26714991409. The next prime is 26714991463. The reversal of 26714991421 is 12419941762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14015955321 + 12699036100 = 118389^2 + 112690^2 .

It is a cyclic number.

It is not a de Polignac number, because 26714991421 - 2¹⁵ = 26714958653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26714991481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13357495710 + 13357495711.

It is an arithmetic number, because the mean of its divisors is an integer number (13357495711).

Almost surely, 2^26714991421 is an apocalyptic number.

It is an amenable number.

26714991421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26714991421 is an equidigital number, since it uses as much as digits as its factorization.

26714991421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The spelling of 26714991421 in words is "twenty-six billion, seven hundred fourteen million, nine hundred ninety-one thousand, four hundred twenty-one".