45866561899 has 4 divisors (see below), whose sum is σ = 46295221464. Its totient is φ = 45437902336.

The previous prime is 45866561893. The next prime is 45866561921. The reversal of 45866561899 is 99816566854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99816566854 = 2 ⋅49908283427.

It is a cyclic number.

It is not a de Polignac number, because 45866561899 - 2⁹ = 45866561387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45866561893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214329622 + ... + 214329835.

It is an arithmetic number, because the mean of its divisors is an integer number (11573805366).

Almost surely, 2^45866561899 is an apocalyptic number.

45866561899 is a deficient number, since it is larger than the sum of its proper divisors (428659565).

45866561899 is a wasteful number, since it uses less digits than its factorization.

45866561899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428659564.

The product of its digits is 111974400, while the sum is 67.

The spelling of 45866561899 in words is "forty-five billion, eight hundred sixty-six million, five hundred sixty-one thousand, eight hundred ninety-nine".