45501668321 has 2 divisors, whose sum is σ = 45501668322. Its totient is φ = 45501668320.

The previous prime is 45501668309. The next prime is 45501668327. The reversal of 45501668321 is 12386610554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29117668321 + 16384000000 = 170639^2 + 128000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45501668321 is a prime.

It is not a weakly prime, because it can be changed into another prime (45501668327) 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, 22750834160 + 22750834161.

It is an arithmetic number, because the mean of its divisors is an integer number (22750834161).

Almost surely, 2^45501668321 is an apocalyptic number.

It is an amenable number.

45501668321 is a deficient number, since it is larger than the sum of its proper divisors (1).

45501668321 is an equidigital number, since it uses as much as digits as its factorization.

45501668321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 45501668321 in words is "forty-five billion, five hundred one million, six hundred sixty-eight thousand, three hundred twenty-one".