45645245665 has 8 divisors (see below), whose sum is σ = 54781121448. Its totient is φ = 36511645440.

The previous prime is 45645245647. The next prime is 45645245683. The reversal of 45645245665 is 56654254654.

It is an interprime number because it is at equal distance from previous prime (45645245647) and next prime (45645245683).

It can be written as a sum of positive squares in 4 ways, for example, as 14259225744 + 31386019921 = 119412^2 + 177161^2 .

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

It is not a de Polignac number, because 45645245665 - 2³¹ = 43497762017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524442 + ... + 605251.

It is an arithmetic number, because the mean of its divisors is an integer number (6847640181).

Almost surely, 2^45645245665 is an apocalyptic number.

It is an amenable number.

45645245665 is a deficient number, since it is larger than the sum of its proper divisors (9135875783).

45645245665 is a wasteful number, since it uses less digits than its factorization.

45645245665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137779.

The product of its digits is 17280000, while the sum is 52.

The spelling of 45645245665 in words is "forty-five billion, six hundred forty-five million, two hundred forty-five thousand, six hundred sixty-five".