39618976768 has 66 divisors (see below), whose sum is σ = 90551959928. Its totient is φ = 16972339200.

The previous prime is 39618976763. The next prime is 39618976781. The reversal of 39618976768 is 86767981693.

It is a junction number, because it is equal to n+sod(n) for n = 39618976697 and 39618976706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39618976763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16850793 + ... + 16853143.

Almost surely, 2^39618976768 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 39618976768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45275979964).

39618976768 is an abundant number, since it is smaller than the sum of its proper divisors (50932983160).

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

39618976768 is an frugal number, since it uses more digits than its factorization.

39618976768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729 (or 2360 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 70.

The spelling of 39618976768 in words is "thirty-nine billion, six hundred eighteen million, nine hundred seventy-six thousand, seven hundred sixty-eight".