8881814881421 has 16 divisors (see below), whose sum is σ = 9054963820800. Its totient is φ = 8708874096000.

The previous prime is 8881814881399. The next prime is 8881814881427. The reversal of 8881814881421 is 1241884181888.

8881814881421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8881814881421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8881814881427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858721976 + ... + 858732318.

It is an arithmetic number, because the mean of its divisors is an integer number (565935238800).

Almost surely, 2^{8881814881421} is an apocalyptic number.

It is an amenable number.

8881814881421 is a deficient number, since it is larger than the sum of its proper divisors (173148939379).

8881814881421 is a wasteful number, since it uses less digits than its factorization.

8881814881421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18796.

The product of its digits is 8388608, while the sum is 62.

The spelling of 8881814881421 in words is "eight trillion, eight hundred eighty-one billion, eight hundred fourteen million, eight hundred eighty-one thousand, four hundred twenty-one".