10326040421 has 2 divisors, whose sum is σ = 10326040422. Its totient is φ = 10326040420.

The previous prime is 10326040381. The next prime is 10326040423. The reversal of 10326040421 is 12404062301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5323307521 + 5002732900 = 72961^2 + 70730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10326040421 is a prime.

It is a super-2 number, since 2×10326040421² (a number of 21 digits) contains 22 as substring.

Together with 10326040423, 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 (10326040423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163020210 + 5163020211.

It is an arithmetic number, because the mean of its divisors is an integer number (5163020211).

Almost surely, 2^10326040421 is an apocalyptic number.

It is an amenable number.

10326040421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10326040421 is an equidigital number, since it uses as much as digits as its factorization.

10326040421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The spelling of 10326040421 in words is "ten billion, three hundred twenty-six million, forty thousand, four hundred twenty-one".