38520806307 has 4 divisors (see below), whose sum is σ = 51361075080. Its totient is φ = 25680537536.

The previous prime is 38520806299. The next prime is 38520806323. The reversal of 38520806307 is 70360802583.

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

It is a cyclic number.

It is not a de Polignac number, because 38520806307 - 2³ = 38520806299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38520806327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6420134382 + ... + 6420134387.

It is an arithmetic number, because the mean of its divisors is an integer number (12840268770).

Almost surely, 2^38520806307 is an apocalyptic number.

38520806307 is a deficient number, since it is larger than the sum of its proper divisors (12840268773).

38520806307 is a wasteful number, since it uses less digits than its factorization.

38520806307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12840268772.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 38520806307 in words is "thirty-eight billion, five hundred twenty million, eight hundred six thousand, three hundred seven".