23639817709 has 16 divisors (see below), whose sum is σ = 24177000960. Its totient is φ = 23108767920.

The previous prime is 23639817671. The next prime is 23639817713. The reversal of 23639817709 is 90771893632.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23639817709 - 2¹³ = 23639809517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23639817709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23639817769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12660994 + ... + 12662860.

It is an arithmetic number, because the mean of its divisors is an integer number (1511062560).

Almost surely, 2^23639817709 is an apocalyptic number.

It is an amenable number.

23639817709 is a deficient number, since it is larger than the sum of its proper divisors (537183251).

23639817709 is a wasteful number, since it uses less digits than its factorization.

23639817709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 23639817709 in words is "twenty-three billion, six hundred thirty-nine million, eight hundred seventeen thousand, seven hundred nine".