45441628424509 has 2 divisors, whose sum is σ = 45441628424510. Its totient is φ = 45441628424508.

The previous prime is 45441628424483. The next prime is 45441628424581. The reversal of 45441628424509 is 90542482614454.

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., 43803284744025 + 1638343680484 = 6618405^2 + 1279978^2 .

It is a cyclic number.

It is not a de Polignac number, because 45441628424509 - 2²³ = 45441620035901 is a prime.

It is a super-2 number, since 2×45441628424509² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45441628424809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22720814212254 + 22720814212255.

It is an arithmetic number, because the mean of its divisors is an integer number (22720814212255).

Almost surely, 2^{45441628424509} is an apocalyptic number.

It is an amenable number.

45441628424509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45441628424509 is an equidigital number, since it uses as much as digits as its factorization.

45441628424509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44236800, while the sum is 58.

The spelling of 45441628424509 in words is "forty-five trillion, four hundred forty-one billion, six hundred twenty-eight million, four hundred twenty-four thousand, five hundred nine".