38785421766 has 256 divisors, whose sum is σ = 103359836160. Its totient is φ = 9413591040.

The previous prime is 38785421687. The next prime is 38785421789. The reversal of 38785421766 is 66712458783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 150915910 + ... + 150916166.

It is an arithmetic number, because the mean of its divisors is an integer number (403749360).

Almost surely, 2^38785421766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38785421766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51679918080).

38785421766 is an abundant number, since it is smaller than the sum of its proper divisors (64574414394).

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

38785421766 is a wasteful number, since it uses less digits than its factorization.

38785421766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its digits is 13547520, while the sum is 57.

The spelling of 38785421766 in words is "thirty-eight billion, seven hundred eighty-five million, four hundred twenty-one thousand, seven hundred sixty-six".