9000021749993 has 4 divisors (see below), whose sum is σ = 9032050297428. Its totient is φ = 8967993202560.

The previous prime is 9000021749981. The next prime is 9000021750059. The reversal of 9000021749993 is 3999471200009.

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 7008107282089 + 1991914467904 = 2647283^2 + 1411352^2 .

It is a cyclic number.

It is not a de Polignac number, because 9000021749993 - 2⁸ = 9000021749737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9000021749893) 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, 16014273296 + ... + 16014273857.

It is an arithmetic number, because the mean of its divisors is an integer number (2258012574357).

Almost surely, 2^{9000021749993} is an apocalyptic number.

It is an amenable number.

9000021749993 is a deficient number, since it is larger than the sum of its proper divisors (32028547435).

9000021749993 is a wasteful number, since it uses less digits than its factorization.

9000021749993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32028547434.

The product of its (nonzero) digits is 1102248, while the sum is 53.

The spelling of 9000021749993 in words is "nine trillion, twenty-one million, seven hundred forty-nine thousand, nine hundred ninety-three".