10426116456421 has 2 divisors, whose sum is σ = 10426116456422. Its totient is φ = 10426116456420.

The previous prime is 10426116456397. The next prime is 10426116456433. The reversal of 10426116456421 is 12465461162401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9866446388100 + 559670068321 = 3141090^2 + 748111^2 .

It is a cyclic number.

It is not a de Polignac number, because 10426116456421 - 2¹³ = 10426116448229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10426116456491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5213058228210 + 5213058228211.

It is an arithmetic number, because the mean of its divisors is an integer number (5213058228211).

Almost surely, 2^{10426116456421} is an apocalyptic number.

It is an amenable number.

10426116456421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10426116456421 is an equidigital number, since it uses as much as digits as its factorization.

10426116456421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 10426116456421 in words is "ten trillion, four hundred twenty-six billion, one hundred sixteen million, four hundred fifty-six thousand, four hundred twenty-one".