26674392421 has 2 divisors, whose sum is σ = 26674392422. Its totient is φ = 26674392420.

The previous prime is 26674392397. The next prime is 26674392461. The reversal of 26674392421 is 12429347662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18519399396 + 8154993025 = 136086^2 + 90305^2 .

It is a cyclic number.

It is not a de Polignac number, because 26674392421 - 2⁷ = 26674392293 is a prime.

It is a super-2 number, since 2×26674392421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26674392461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13337196210 + 13337196211.

It is an arithmetic number, because the mean of its divisors is an integer number (13337196211).

Almost surely, 2^26674392421 is an apocalyptic number.

It is an amenable number.

26674392421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26674392421 is an equidigital number, since it uses as much as digits as its factorization.

26674392421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The spelling of 26674392421 in words is "twenty-six billion, six hundred seventy-four million, three hundred ninety-two thousand, four hundred twenty-one".