38911785016 has 64 divisors (see below), whose sum is σ = 79328148480. Its totient is φ = 17786926080.

The previous prime is 38911785013. The next prime is 38911785041. The reversal of 38911785016 is 61058711983.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38911785013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8728260 + ... + 8732716.

It is an arithmetic number, because the mean of its divisors is an integer number (1239502320).

Almost surely, 2^38911785016 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 38911785016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39664074240).

38911785016 is an abundant number, since it is smaller than the sum of its proper divisors (40416363464).

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

38911785016 is a wasteful number, since it uses less digits than its factorization.

38911785016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 49.

The spelling of 38911785016 in words is "thirty-eight billion, nine hundred eleven million, seven hundred eighty-five thousand, sixteen".