39890658816 has 160 divisors (see below), whose sum is σ = 118263546720. Its totient is φ = 13276127232.

The previous prime is 39890658809. The next prime is 39890658827. The reversal of 39890658816 is 61885609893.

39890658816 is a `hidden beast` number, since 39 + 8 + 9 + 0 + 6 + 588 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10684086 + ... + 10687818.

It is an arithmetic number, because the mean of its divisors is an integer number (739147167).

Almost surely, 2^39890658816 is an apocalyptic number.

39890658816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39890658816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59131773360).

39890658816 is an abundant number, since it is smaller than the sum of its proper divisors (78372887904).

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

39890658816 is an equidigital number, since it uses as much as digits as its factorization.

39890658816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 39890658816 in words is "thirty-nine billion, eight hundred ninety million, six hundred fifty-eight thousand, eight hundred sixteen".