2399700506645 has 8 divisors (see below), whose sum is σ = 3101151424056. Its totient is φ = 1772086527936.

The previous prime is 2399700506639. The next prime is 2399700506663. The reversal of 2399700506645 is 5466050079932.

It is a happy number.

2399700506645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11188985284 + 2388511521361 = 105778^2 + 1545481^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2399700506645 - 2²⁸ = 2399432071189 is a prime.

It is a Duffinian number.

It is a congruent 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, 18459234602 + ... + 18459234731.

It is an arithmetic number, because the mean of its divisors is an integer number (387643928007).

Almost surely, 2^{2399700506645} is an apocalyptic number.

It is an amenable number.

2399700506645 is a deficient number, since it is larger than the sum of its proper divisors (701450917411).

2399700506645 is a wasteful number, since it uses less digits than its factorization.

2399700506645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36918469351.

The product of its (nonzero) digits is 12247200, while the sum is 56.

The spelling of 2399700506645 in words is "two trillion, three hundred ninety-nine billion, seven hundred million, five hundred six thousand, six hundred forty-five".