45312215213 has 2 divisors, whose sum is σ = 45312215214. Its totient is φ = 45312215212.

The previous prime is 45312215209. The next prime is 45312215257. The reversal of 45312215213 is 31251221354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29817691684 + 15494523529 = 172678^2 + 124477^2 .

It is a cyclic number.

It is not a de Polignac number, because 45312215213 - 2² = 45312215209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45312215203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22656107606 + 22656107607.

It is an arithmetic number, because the mean of its divisors is an integer number (22656107607).

Almost surely, 2^45312215213 is an apocalyptic number.

It is an amenable number.

45312215213 is a deficient number, since it is larger than the sum of its proper divisors (1).

45312215213 is an equidigital number, since it uses as much as digits as its factorization.

45312215213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

Adding to 45312215213 its reverse (31251221354), we get a palindrome (76563436567).

The spelling of 45312215213 in words is "forty-five billion, three hundred twelve million, two hundred fifteen thousand, two hundred thirteen".