35445447421 has 2 divisors, whose sum is σ = 35445447422. Its totient is φ = 35445447420.

The previous prime is 35445447319. The next prime is 35445447497. The reversal of 35445447421 is 12474454453.

It is a happy number.

35445447421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19491231321 + 15954216100 = 139611^2 + 126310^2 .

It is an emirp because it is prime and its reverse (12474454453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35445447421 - 2³¹ = 33297963773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35445444421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17722723710 + 17722723711.

It is an arithmetic number, because the mean of its divisors is an integer number (17722723711).

Almost surely, 2^35445447421 is an apocalyptic number.

It is an amenable number.

35445447421 is a deficient number, since it is larger than the sum of its proper divisors (1).

35445447421 is an equidigital number, since it uses as much as digits as its factorization.

35445447421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 43.

The spelling of 35445447421 in words is "thirty-five billion, four hundred forty-five million, four hundred forty-seven thousand, four hundred twenty-one".