10945421707421 has 2 divisors, whose sum is σ = 10945421707422. Its totient is φ = 10945421707420.

The previous prime is 10945421707387. The next prime is 10945421707457. The reversal of 10945421707421 is 12470712454901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10170518265625 + 774903441796 = 3189125^2 + 880286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10945421707421 - 2¹⁴ = 10945421691037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10945421797421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5472710853710 + 5472710853711.

It is an arithmetic number, because the mean of its divisors is an integer number (5472710853711).

Almost surely, 2^{10945421707421} is an apocalyptic number.

It is an amenable number.

10945421707421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10945421707421 is an equidigital number, since it uses as much as digits as its factorization.

10945421707421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 10945421707421 in words is "ten trillion, nine hundred forty-five billion, four hundred twenty-one million, seven hundred seven thousand, four hundred twenty-one".