38639693651328 has 3072 divisors, whose sum is σ = 158308491264000. Its totient is φ = 9045739929600.

The previous prime is 38639693651267. The next prime is 38639693651329. The reversal of 38639693651328 is 82315639693683.

It is a happy number.

38639693651328 is a `hidden beast` number, since 3 + 86 + 3 + 9 + 6 + 9 + 3 + 6 + 513 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38639693651329) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 125862194151 + ... + 125862194457.

It is an arithmetic number, because the mean of its divisors is an integer number (51532712000).

Almost surely, 2^{38639693651328} is an apocalyptic number.

38639693651328 is a gapful number since it is divisible by the number (38) 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 38639693651328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79154245632000).

38639693651328 is an abundant number, since it is smaller than the sum of its proper divisors (119668797612672).

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

38639693651328 is a wasteful number, since it uses less digits than its factorization.

38639693651328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 453 counting only the distinct ones).

The product of its digits is 906992640, while the sum is 72.

The spelling of 38639693651328 in words is "thirty-eight trillion, six hundred thirty-nine billion, six hundred ninety-three million, six hundred fifty-one thousand, three hundred twenty-eight".