39646998065 has 16 divisors (see below), whose sum is σ = 48283361280. Its totient is φ = 31248035520.

The previous prime is 39646998047. The next prime is 39646998077. The reversal of 39646998065 is 56089964693.

It is not a de Polignac number, because 39646998065 - 2⁸ = 39646997809 is a prime.

It is a super-2 number, since 2×39646998065² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39646997992 and 39646998010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73232 + ... + 290958.

It is an arithmetic number, because the mean of its divisors is an integer number (3017710080).

Almost surely, 2^39646998065 is an apocalyptic number.

It is an amenable number.

39646998065 is a deficient number, since it is larger than the sum of its proper divisors (8636363215).

39646998065 is a wasteful number, since it uses less digits than its factorization.

39646998065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218272.

The product of its (nonzero) digits is 75582720, while the sum is 65.

The spelling of 39646998065 in words is "thirty-nine billion, six hundred forty-six million, nine hundred ninety-eight thousand, sixty-five".