39421866180971 has 4 divisors (see below), whose sum is σ = 41740799485752. Its totient is φ = 37102932876192.

The previous prime is 39421866180887. The next prime is 39421866181099. The reversal of 39421866180971 is 17908166812493.

39421866180971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 39421866180971 - 2²⁶ = 39421799072107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39421866180898 and 39421866180907.

It is not an unprimeable number, because it can be changed into a prime (39421866189971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159466652365 + ... + 1159466652398.

It is an arithmetic number, because the mean of its divisors is an integer number (10435199871438).

Almost surely, 2^{39421866180971} is an apocalyptic number.

39421866180971 is a deficient number, since it is larger than the sum of its proper divisors (2318933304781).

39421866180971 is a wasteful number, since it uses less digits than its factorization.

39421866180971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318933304780.

The product of its (nonzero) digits is 31352832, while the sum is 65.

The spelling of 39421866180971 in words is "thirty-nine trillion, four hundred twenty-one billion, eight hundred sixty-six million, one hundred eighty thousand, nine hundred seventy-one".