45840420865 has 8 divisors (see below), whose sum is σ = 58244299560. Its totient is φ = 34515140352.

The previous prime is 45840420823. The next prime is 45840420877. The reversal of 45840420865 is 56802404854.

It can be written as a sum of positive squares in 4 ways, for example, as 14669812161 + 31170608704 = 121119^2 + 176552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45840420865 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269649450 + ... + 269649619.

It is an arithmetic number, because the mean of its divisors is an integer number (7280537445).

Almost surely, 2^45840420865 is an apocalyptic number.

It is an amenable number.

45840420865 is a deficient number, since it is larger than the sum of its proper divisors (12403878695).

45840420865 is a wasteful number, since it uses less digits than its factorization.

45840420865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539299091.

The product of its (nonzero) digits is 1228800, while the sum is 46.

The spelling of 45840420865 in words is "forty-five billion, eight hundred forty million, four hundred twenty thousand, eight hundred sixty-five".