38643358325209 has 12 divisors (see below), whose sum is σ = 43940438794980. Its totient is φ = 33918935204000.

The previous prime is 38643358325183. The next prime is 38643358325237. The reversal of 38643358325209 is 90252385334683.

It can be written as a sum of positive squares in 2 ways, for example, as 9332536206400 + 29310822118809 = 3054920^2 + 5413947^2 .

It is not a de Polignac number, because 38643358325209 - 2²⁵ = 38643324770777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38643358325239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5506317142 + ... + 5506324159.

It is an arithmetic number, because the mean of its divisors is an integer number (3661703232915).

Almost surely, 2^{38643358325209} is an apocalyptic number.

It is an amenable number.

38643358325209 is a deficient number, since it is larger than the sum of its proper divisors (5297080469771).

38643358325209 is a wasteful number, since it uses less digits than its factorization.

38643358325209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012641352 (or 11012641341 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 61.

The spelling of 38643358325209 in words is "thirty-eight trillion, six hundred forty-three billion, three hundred fifty-eight million, three hundred twenty-five thousand, two hundred nine".