38868281605657 has 8 divisors (see below), whose sum is σ = 44475801667200. Its totient is φ = 33274488645024.

The previous prime is 38868281605633. The next prime is 38868281605679. The reversal of 38868281605657 is 75650618286883.

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

It is a cyclic number.

It is not a de Polignac number, because 38868281605657 - 2¹⁵ = 38868281572889 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 38868281605657.

It is not an unprimeable number, because it can be changed into a prime (38868281605627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3431769157 + ... + 3431780482.

It is an arithmetic number, because the mean of its divisors is an integer number (5559475208400).

Almost surely, 2^{38868281605657} is an apocalyptic number.

It is an amenable number.

38868281605657 is a deficient number, since it is larger than the sum of its proper divisors (5607520061543).

38868281605657 is an equidigital number, since it uses as much as digits as its factorization.

38868281605657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863550455.

The product of its (nonzero) digits is 928972800, while the sum is 73.

The spelling of 38868281605657 in words is "thirty-eight trillion, eight hundred sixty-eight billion, two hundred eighty-one million, six hundred five thousand, six hundred fifty-seven".