39789663426688 has 256 divisors, whose sum is σ = 96381187200000. Its totient is φ = 15972783095808.

The previous prime is 39789663426659. The next prime is 39789663426691. The reversal of 39789663426688 is 88662436698793.

It is a super-2 number, since 2×39789663426688² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11536577988 + ... + 11536581436.

It is an arithmetic number, because the mean of its divisors is an integer number (376489012500).

Almost surely, 2^{39789663426688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39789663426688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48190593600000).

39789663426688 is an abundant number, since it is smaller than the sum of its proper divisors (56591523773312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39789663426688 is a wasteful number, since it uses less digits than its factorization.

39789663426688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895 (or 6883 counting only the distinct ones).

The product of its digits is 27088846848, while the sum is 85.

The spelling of 39789663426688 in words is "thirty-nine trillion, seven hundred eighty-nine billion, six hundred sixty-three million, four hundred twenty-six thousand, six hundred eighty-eight".