45549894541 has 2 divisors, whose sum is σ = 45549894542. Its totient is φ = 45549894540.

The previous prime is 45549894529. The next prime is 45549894617. The reversal of 45549894541 is 14549894554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34134040516 + 11415854025 = 184754^2 + 106845^2 .

It is a cyclic number.

It is not a de Polignac number, because 45549894541 - 2²⁵ = 45516340109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45549894241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22774947270 + 22774947271.

It is an arithmetic number, because the mean of its divisors is an integer number (22774947271).

Almost surely, 2^45549894541 is an apocalyptic number.

It is an amenable number.

45549894541 is a deficient number, since it is larger than the sum of its proper divisors (1).

45549894541 is an equidigital number, since it uses as much as digits as its factorization.

45549894541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736000, while the sum is 58.

The spelling of 45549894541 in words is "forty-five billion, five hundred forty-nine million, eight hundred ninety-four thousand, five hundred forty-one".