45145064021 has 2 divisors, whose sum is σ = 45145064022. Its totient is φ = 45145064020.

The previous prime is 45145063993. The next prime is 45145064039. The reversal of 45145064021 is 12046054154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27651033796 + 17494030225 = 166286^2 + 132265^2 .

It is a cyclic number.

It is not a de Polignac number, because 45145064021 - 2²² = 45140869717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45145064521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22572532010 + 22572532011.

It is an arithmetic number, because the mean of its divisors is an integer number (22572532011).

Almost surely, 2^45145064021 is an apocalyptic number.

It is an amenable number.

45145064021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45145064021 is an equidigital number, since it uses as much as digits as its factorization.

45145064021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 45145064021 in words is "forty-five billion, one hundred forty-five million, sixty-four thousand, twenty-one".