45154452509 has 2 divisors, whose sum is σ = 45154452510. Its totient is φ = 45154452508.

The previous prime is 45154452479. The next prime is 45154452557. The reversal of 45154452509 is 90525445154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26494072900 + 18660379609 = 162770^2 + 136603^2 .

It is a cyclic number.

It is not a de Polignac number, because 45154452509 - 2¹² = 45154448413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45154452509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45154451509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22577226254 + 22577226255.

It is an arithmetic number, because the mean of its divisors is an integer number (22577226255).

Almost surely, 2^45154452509 is an apocalyptic number.

It is an amenable number.

45154452509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45154452509 is an equidigital number, since it uses as much as digits as its factorization.

45154452509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 45154452509 in words is "forty-five billion, one hundred fifty-four million, four hundred fifty-two thousand, five hundred nine".