8138327400397 has 8 divisors (see below), whose sum is σ = 8188097677056. Its totient is φ = 8088642568272.

The previous prime is 8138327400377. The next prime is 8138327400403. The reversal of 8138327400397 is 7930047238318.

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 8138327400397 - 2²³ = 8138319011789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138327400377) 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, 21170053 + ... + 21551050.

It is an arithmetic number, because the mean of its divisors is an integer number (1023512209632).

Almost surely, 2^{8138327400397} is an apocalyptic number.

It is an amenable number.

8138327400397 is a deficient number, since it is larger than the sum of its proper divisors (49770276659).

8138327400397 is a wasteful number, since it uses less digits than its factorization.

8138327400397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42722267.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 8138327400397 in words is "eight trillion, one hundred thirty-eight billion, three hundred twenty-seven million, four hundred thousand, three hundred ninety-seven".