38402010217 has 4 divisors (see below), whose sum is σ = 38424325716. Its totient is φ = 38379694720.

The previous prime is 38402010181. The next prime is 38402010247. The reversal of 38402010217 is 71201020483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24026240016 + 14375770201 = 155004^2 + 119899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38402010217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38402010247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11155168 + ... + 11158609.

It is an arithmetic number, because the mean of its divisors is an integer number (9606081429).

Almost surely, 2^38402010217 is an apocalyptic number.

It is an amenable number.

38402010217 is a deficient number, since it is larger than the sum of its proper divisors (22315499).

38402010217 is a wasteful number, since it uses less digits than its factorization.

38402010217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22315498.

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 38402010217 in words is "thirty-eight billion, four hundred two million, ten thousand, two hundred seventeen".