45775886209 has 3 divisors (see below), whose sum is σ = 45776100163. Its totient is φ = 45775672256.

The previous prime is 45775886131. The next prime is 45775886243. The reversal of 45775886209 is 90268857754.

The square root of 45775886209 is 213953.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4942793025 + 40833093184 = 70305^2 + 202072^2 .

It is not a de Polignac number, because 45775886209 - 2¹³ = 45775878017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45775886279) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 106977 + ... + 320929.

Almost surely, 2^45775886209 is an apocalyptic number.

45775886209 is the 213953-rd square number.

45775886209 is the 106977-th centered octagonal number.

It is an amenable number.

45775886209 is a deficient number, since it is larger than the sum of its proper divisors (213954).

45775886209 is an frugal number, since it uses more digits than its factorization.

45775886209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427906 (or 213953 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 45775886209 in words is "forty-five billion, seven hundred seventy-five million, eight hundred eighty-six thousand, two hundred nine".