65665152699 has 4 divisors (see below), whose sum is σ = 87553536936. Its totient is φ = 43776768464.

The previous prime is 65665152677. The next prime is 65665152703. The reversal of 65665152699 is 99625156656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65665152699 - 2¹¹ = 65665150651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65665152199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10944192114 + ... + 10944192119.

It is an arithmetic number, because the mean of its divisors is an integer number (21888384234).

Almost surely, 2^65665152699 is an apocalyptic number.

65665152699 is a deficient number, since it is larger than the sum of its proper divisors (21888384237).

65665152699 is a wasteful number, since it uses less digits than its factorization.

65665152699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21888384236.

The product of its digits is 26244000, while the sum is 60.

The spelling of 65665152699 in words is "sixty-five billion, six hundred sixty-five million, one hundred fifty-two thousand, six hundred ninety-nine".