38743896665 has 16 divisors (see below), whose sum is σ = 49298855040. Its totient is φ = 29129614080.

The previous prime is 38743896661. The next prime is 38743896749. The reversal of 38743896665 is 56669834783.

It is not a de Polignac number, because 38743896665 - 2² = 38743896661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38743896661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271085 + ... + 388554.

It is an arithmetic number, because the mean of its divisors is an integer number (3081178440).

Almost surely, 2^38743896665 is an apocalyptic number.

It is an amenable number.

38743896665 is a deficient number, since it is larger than the sum of its proper divisors (10554958375).

38743896665 is a wasteful number, since it uses less digits than its factorization.

38743896665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660352.

The product of its digits is 156764160, while the sum is 65.

The spelling of 38743896665 in words is "thirty-eight billion, seven hundred forty-three million, eight hundred ninety-six thousand, six hundred sixty-five".