8810145268421 has 12 divisors (see below), whose sum is σ = 10249719031980. Its totient is φ = 7550681624640.

The previous prime is 8810145268357. The next prime is 8810145268447. The reversal of 8810145268421 is 1248625410188.

It can be written as a sum of positive squares in 2 ways, for example, as 6390222796321 + 2419922472100 = 2527889^2 + 1555610^2 .

It is not a de Polignac number, because 8810145268421 - 2⁶ = 8810145268357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8810145268421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8810145268021) 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, 9945440 + ... + 10795001.

It is an arithmetic number, because the mean of its divisors is an integer number (854143252665).

Almost surely, 2^{8810145268421} is an apocalyptic number.

It is an amenable number.

8810145268421 is a deficient number, since it is larger than the sum of its proper divisors (1439573763559).

8810145268421 is a wasteful number, since it uses less digits than its factorization.

8810145268421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20749124 (or 20749117 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 50.

The spelling of 8810145268421 in words is "eight trillion, eight hundred ten billion, one hundred forty-five million, two hundred sixty-eight thousand, four hundred twenty-one".