45066619561 has 2 divisors, whose sum is σ = 45066619562. Its totient is φ = 45066619560.

The previous prime is 45066619553. The next prime is 45066619567. The reversal of 45066619561 is 16591666054.

It is a happy number.

45066619561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27173544336 + 17893075225 = 164844^2 + 133765^2 .

It is a cyclic number.

It is not a de Polignac number, because 45066619561 - 2³ = 45066619553 is a prime.

It is not a weakly prime, because it can be changed into another prime (45066619567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22533309780 + 22533309781.

It is an arithmetic number, because the mean of its divisors is an integer number (22533309781).

Almost surely, 2^45066619561 is an apocalyptic number.

It is an amenable number.

45066619561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45066619561 is an equidigital number, since it uses as much as digits as its factorization.

45066619561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 45066619561 in words is "forty-five billion, sixty-six million, six hundred nineteen thousand, five hundred sixty-one".