45135625321 has 2 divisors, whose sum is σ = 45135625322. Its totient is φ = 45135625320.

The previous prime is 45135625319. The next prime is 45135625349. The reversal of 45135625321 is 12352653154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41503875625 + 3631749696 = 203725^2 + 60264^2 .

It is a cyclic number.

It is not a de Polignac number, because 45135625321 - 2¹ = 45135625319 is a prime.

Together with 45135625319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45135625361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22567812660 + 22567812661.

It is an arithmetic number, because the mean of its divisors is an integer number (22567812661).

Almost surely, 2^45135625321 is an apocalyptic number.

It is an amenable number.

45135625321 is a deficient number, since it is larger than the sum of its proper divisors (1).

45135625321 is an equidigital number, since it uses as much as digits as its factorization.

45135625321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 37.

The spelling of 45135625321 in words is "forty-five billion, one hundred thirty-five million, six hundred twenty-five thousand, three hundred twenty-one".