38688284111646 has 96 divisors (see below), whose sum is σ = 87774083413632. Its totient is φ = 11299596834240.

The previous prime is 38688284111641. The next prime is 38688284111657. The reversal of 38688284111646 is 64611148288683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38688284111641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1826601 + ... + 8984043.

It is an arithmetic number, because the mean of its divisors is an integer number (914313368892).

Almost surely, 2^{38688284111646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38688284111646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43887041706816).

38688284111646 is an abundant number, since it is smaller than the sum of its proper divisors (49085799301986).

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

38688284111646 is a wasteful number, since it uses less digits than its factorization.

38688284111646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157638 (or 7157615 counting only the distinct ones).

The product of its digits is 84934656, while the sum is 66.

The spelling of 38688284111646 in words is "thirty-eight trillion, six hundred eighty-eight billion, two hundred eighty-four million, one hundred eleven thousand, six hundred forty-six".