213452045369 has 2 divisors, whose sum is σ = 213452045370. Its totient is φ = 213452045368.

The previous prime is 213452045357. The next prime is 213452045449. The reversal of 213452045369 is 963540254312.

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., 212877963769 + 574081600 = 461387^2 + 23960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213452045369 is a prime.

It is a super-2 number, since 2×213452045369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213452045309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106726022684 + 106726022685.

It is an arithmetic number, because the mean of its divisors is an integer number (106726022685).

Almost surely, 2^213452045369 is an apocalyptic number.

It is an amenable number.

213452045369 is a deficient number, since it is larger than the sum of its proper divisors (1).

213452045369 is an equidigital number, since it uses as much as digits as its factorization.

213452045369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 213452045369 in words is "two hundred thirteen billion, four hundred fifty-two million, forty-five thousand, three hundred sixty-nine".