45405432161 has 2 divisors, whose sum is σ = 45405432162. Its totient is φ = 45405432160.

The previous prime is 45405432103. The next prime is 45405432173. The reversal of 45405432161 is 16123450454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45396694225 + 8737936 = 213065^2 + 2956^2 .

It is a cyclic number.

It is not a de Polignac number, because 45405432161 - 2¹⁴ = 45405415777 is a prime.

It is not a weakly prime, because it can be changed into another prime (45405432461) 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, 22702716080 + 22702716081.

It is an arithmetic number, because the mean of its divisors is an integer number (22702716081).

Almost surely, 2^45405432161 is an apocalyptic number.

It is an amenable number.

45405432161 is a deficient number, since it is larger than the sum of its proper divisors (1).

45405432161 is an equidigital number, since it uses as much as digits as its factorization.

45405432161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 45405432161 in words is "forty-five billion, four hundred five million, four hundred thirty-two thousand, one hundred sixty-one".