8938872813021 has 16 divisors (see below), whose sum is σ = 12615100155840. Its totient is φ = 5614412693760.

The previous prime is 8938872813019. The next prime is 8938872813061. The reversal of 8938872813021 is 1203182788398.

It is not a de Polignac number, because 8938872813021 - 2¹ = 8938872813019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8938872813061) 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 15 ways as a sum of consecutive naturals, for example, 433200540 + ... + 433221173.

It is an arithmetic number, because the mean of its divisors is an integer number (788443759740).

Almost surely, 2^{8938872813021} is an apocalyptic number.

It is an amenable number.

8938872813021 is a deficient number, since it is larger than the sum of its proper divisors (3676227342819).

8938872813021 is a wasteful number, since it uses less digits than its factorization.

8938872813021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866421916.

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 8938872813021 in words is "eight trillion, nine hundred thirty-eight billion, eight hundred seventy-two million, eight hundred thirteen thousand, twenty-one".