39789663426689 has 48 divisors (see below), whose sum is σ = 48732696196800. Its totient is φ = 32317467557760.

The previous prime is 39789663426659. The next prime is 39789663426691. The reversal of 39789663426689 is 98662436698793.

It is not a de Polignac number, because 39789663426689 - 2⁴⁴ = 22197477382273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39789663426689.

It is not an unprimeable number, because it can be changed into a prime (39789663426619) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4072754 + ... + 9806459.

It is an arithmetic number, because the mean of its divisors is an integer number (1015264504100).

Almost surely, 2^{39789663426689} is an apocalyptic number.

It is an amenable number.

39789663426689 is a deficient number, since it is larger than the sum of its proper divisors (8943032770111).

39789663426689 is a wasteful number, since it uses less digits than its factorization.

39789663426689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13879326 (or 13879315 counting only the distinct ones).

The product of its digits is 30474952704, while the sum is 86.

The spelling of 39789663426689 in words is "thirty-nine trillion, seven hundred eighty-nine billion, six hundred sixty-three million, four hundred twenty-six thousand, six hundred eighty-nine".