11452405421 has 2 divisors, whose sum is σ = 11452405422. Its totient is φ = 11452405420.

The previous prime is 11452405381. The next prime is 11452405451. The reversal of 11452405421 is 12450425411.

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., 8306317321 + 3146088100 = 91139^2 + 56090^2 .

It is a cyclic number.

It is not a de Polignac number, because 11452405421 - 2¹⁴ = 11452389037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11452405451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5726202710 + 5726202711.

It is an arithmetic number, because the mean of its divisors is an integer number (5726202711).

Almost surely, 2^11452405421 is an apocalyptic number.

It is an amenable number.

11452405421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11452405421 is an equidigital number, since it uses as much as digits as its factorization.

11452405421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 11452405421 in words is "eleven billion, four hundred fifty-two million, four hundred five thousand, four hundred twenty-one".