8994105152521 has 4 divisors (see below), whose sum is σ = 9054468274500. Its totient is φ = 8933742030544.

The previous prime is 8994105152519. The next prime is 8994105152621. The reversal of 8994105152521 is 1252515014998.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5206332864121 + 3787772288400 = 2281739^2 + 1946220^2 .

It is a cyclic number.

It is not a de Polignac number, because 8994105152521 - 2¹ = 8994105152519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8994105152621) 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, 30181560766 + ... + 30181561063.

It is an arithmetic number, because the mean of its divisors is an integer number (2263617068625).

Almost surely, 2^{8994105152521} is an apocalyptic number.

It is an amenable number.

8994105152521 is a deficient number, since it is larger than the sum of its proper divisors (60363121979).

8994105152521 is a wasteful number, since it uses less digits than its factorization.

8994105152521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60363121978.

The product of its (nonzero) digits is 1296000, while the sum is 52.

The spelling of 8994105152521 in words is "eight trillion, nine hundred ninety-four billion, one hundred five million, one hundred fifty-two thousand, five hundred twenty-one".