10421444413 has 2 divisors, whose sum is σ = 10421444414. Its totient is φ = 10421444412.

The previous prime is 10421444381. The next prime is 10421444419. The reversal of 10421444413 is 31444412401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6276917529 + 4144526884 = 79227^2 + 64378^2 .

It is a cyclic number.

It is not a de Polignac number, because 10421444413 - 2⁵ = 10421444381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10421444419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210722206 + 5210722207.

It is an arithmetic number, because the mean of its divisors is an integer number (5210722207).

Almost surely, 2^10421444413 is an apocalyptic number.

It is an amenable number.

10421444413 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421444413 is an equidigital number, since it uses as much as digits as its factorization.

10421444413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 10421444413 its reverse (31444412401), we get a palindrome (41865856814).

The spelling of 10421444413 in words is "ten billion, four hundred twenty-one million, four hundred forty-four thousand, four hundred thirteen".