38515218009 has 8 divisors (see below), whose sum is σ = 51374706240. Its totient is φ = 25666270896.

The previous prime is 38515217999. The next prime is 38515218011. The reversal of 38515218009 is 90081251583.

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

It is not a de Polignac number, because 38515218009 - 2⁵ = 38515217977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38515218089) 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, 2626749 + ... + 2641370.

It is an arithmetic number, because the mean of its divisors is an integer number (6421838280).

Almost surely, 2^38515218009 is an apocalyptic number.

It is an amenable number.

38515218009 is a deficient number, since it is larger than the sum of its proper divisors (12859488231).

38515218009 is a wasteful number, since it uses less digits than its factorization.

38515218009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270559.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 38515218009 in words is "thirty-eight billion, five hundred fifteen million, two hundred eighteen thousand, nine".