38685387488 has 48 divisors (see below), whose sum is σ = 83293161840. Its totient is φ = 17540352000.

The previous prime is 38685387479. The next prime is 38685387511. The reversal of 38685387488 is 88478358683.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 4118 + ... + 278186.

It is an arithmetic number, because the mean of its divisors is an integer number (1735274205).

Almost surely, 2^38685387488 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 38685387488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41646580920).

38685387488 is an abundant number, since it is smaller than the sum of its proper divisors (44607774352).

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

38685387488 is a wasteful number, since it uses less digits than its factorization.

38685387488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274491 (or 274483 counting only the distinct ones).

The product of its digits is 247726080, while the sum is 68.

The spelling of 38685387488 in words is "thirty-eight billion, six hundred eighty-five million, three hundred eighty-seven thousand, four hundred eighty-eight".