45220421551553 has 2 divisors, whose sum is σ = 45220421551554. Its totient is φ = 45220421551552.

The previous prime is 45220421551531. The next prime is 45220421551607. The reversal of 45220421551553 is 35515512402254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41804345434384 + 3416076117169 = 6465628^2 + 1848263^2 .

It is a cyclic number.

It is not a de Polignac number, because 45220421551553 - 2¹⁸ = 45220421289409 is a prime.

It is not a weakly prime, because it can be changed into another prime (45220421751553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22610210775776 + 22610210775777.

It is an arithmetic number, because the mean of its divisors is an integer number (22610210775777).

Almost surely, 2^{45220421551553} is an apocalyptic number.

It is an amenable number.

45220421551553 is a deficient number, since it is larger than the sum of its proper divisors (1).

45220421551553 is an equidigital number, since it uses as much as digits as its factorization.

45220421551553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 45220421551553 in words is "forty-five trillion, two hundred twenty billion, four hundred twenty-one million, five hundred fifty-one thousand, five hundred fifty-three".