45186192221 has 2 divisors, whose sum is σ = 45186192222. Its totient is φ = 45186192220.

The previous prime is 45186192101. The next prime is 45186192239. The reversal of 45186192221 is 12229168154.

45186192221 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., 44609664100 + 576528121 = 211210^2 + 24011^2 .

It is a cyclic number.

It is not a de Polignac number, because 45186192221 - 2³⁰ = 44112450397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45186192241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22593096110 + 22593096111.

It is an arithmetic number, because the mean of its divisors is an integer number (22593096111).

Almost surely, 2^45186192221 is an apocalyptic number.

It is an amenable number.

45186192221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45186192221 is an equidigital number, since it uses as much as digits as its factorization.

45186192221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The spelling of 45186192221 in words is "forty-five billion, one hundred eighty-six million, one hundred ninety-two thousand, two hundred twenty-one".