38406287678815 has 8 divisors (see below), whose sum is σ = 52671480245280. Its totient is φ = 26335740122592.

The previous prime is 38406287678789. The next prime is 38406287678819. The reversal of 38406287678815 is 51887678260483.

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 38406287678815 - 2¹⁵ = 38406287646047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38406287678819) 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, 548661252520 + ... + 548661252589.

It is an arithmetic number, because the mean of its divisors is an integer number (6583935030660).

Almost surely, 2^{38406287678815} is an apocalyptic number.

38406287678815 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38406287678815 is a deficient number, since it is larger than the sum of its proper divisors (14265192566465).

38406287678815 is a wasteful number, since it uses less digits than its factorization.

38406287678815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097322505121.

The product of its (nonzero) digits is 867041280, while the sum is 73.

The spelling of 38406287678815 in words is "thirty-eight trillion, four hundred six billion, two hundred eighty-seven million, six hundred seventy-eight thousand, eight hundred fifteen".