38605915685 has 8 divisors (see below), whose sum is σ = 46665253656. Its totient is φ = 30659296000.

The previous prime is 38605915657. The next prime is 38605915697. The reversal of 38605915685 is 58651950683.

38605915685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12644327809 + 25961587876 = 112447^2 + 161126^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38605915685 - 2²⁶ = 38538806821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38605915685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28178816 + ... + 28180185.

It is an arithmetic number, because the mean of its divisors is an integer number (5833156707).

Almost surely, 2^38605915685 is an apocalyptic number.

It is an amenable number.

38605915685 is a deficient number, since it is larger than the sum of its proper divisors (8059337971).

38605915685 is a wasteful number, since it uses less digits than its factorization.

38605915685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56359143.

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 38605915685 in words is "thirty-eight billion, six hundred five million, nine hundred fifteen thousand, six hundred eighty-five".