39917968896 has 320 divisors, whose sum is σ = 120332298240. Its totient is φ = 11674091520.

The previous prime is 39917968879. The next prime is 39917968897. The reversal of 39917968896 is 69886971993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39917968897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36520926 + ... + 36522018.

It is an arithmetic number, because the mean of its divisors is an integer number (376038432).

Almost surely, 2^39917968896 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 39917968896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60166149120).

39917968896 is an abundant number, since it is smaller than the sum of its proper divisors (80414329344).

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

39917968896 is a wasteful number, since it uses less digits than its factorization.

39917968896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1201 counting only the distinct ones).

The product of its digits is 317447424, while the sum is 75.

The spelling of 39917968896 in words is "thirty-nine billion, nine hundred seventeen million, nine hundred sixty-eight thousand, eight hundred ninety-six".