45551810545 has 4 divisors (see below), whose sum is σ = 54662172660. Its totient is φ = 36441448432.

The previous prime is 45551810483. The next prime is 45551810561. The reversal of 45551810545 is 54501815554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18007761249 + 27544049296 = 134193^2 + 165964^2 .

It is a cyclic number.

It is not a de Polignac number, because 45551810545 - 2⁷ = 45551810417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4555181050 + ... + 4555181059.

It is an arithmetic number, because the mean of its divisors is an integer number (13665543165).

Almost surely, 2^45551810545 is an apocalyptic number.

It is an amenable number.

45551810545 is a deficient number, since it is larger than the sum of its proper divisors (9110362115).

45551810545 is an equidigital number, since it uses as much as digits as its factorization.

45551810545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110362114.

The product of its (nonzero) digits is 400000, while the sum is 43.

The spelling of 45551810545 in words is "forty-five billion, five hundred fifty-one million, eight hundred ten thousand, five hundred forty-five".