52643600665 has 8 divisors (see below), whose sum is σ = 63208616328. Its totient is φ = 42090683520.

The previous prime is 52643600663. The next prime is 52643600671. The reversal of 52643600665 is 56600634625.

It can be written as a sum of positive squares in 4 ways, for example, as 325730304 + 52317870361 = 18048^2 + 228731^2 .

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

It is not a de Polignac number, because 52643600665 - 2¹ = 52643600663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52643600663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3015052 + ... + 3032461.

It is an arithmetic number, because the mean of its divisors is an integer number (7901077041).

Almost surely, 2^52643600665 is an apocalyptic number.

It is an amenable number.

52643600665 is a deficient number, since it is larger than the sum of its proper divisors (10565015663).

52643600665 is a wasteful number, since it uses less digits than its factorization.

52643600665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049259.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 52643600665 in words is "fifty-two billion, six hundred forty-three million, six hundred thousand, six hundred sixty-five".