9288254421721 has 4 divisors (see below), whose sum is σ = 10132641187344. Its totient is φ = 8443867656100.

The previous prime is 9288254421689. The next prime is 9288254421727. The reversal of 9288254421721 is 1271244528829.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9288254421721 - 2⁵ = 9288254421689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9288254421727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422193382795 + ... + 422193382816.

It is an arithmetic number, because the mean of its divisors is an integer number (2533160296836).

Almost surely, 2^{9288254421721} is an apocalyptic number.

It is an amenable number.

9288254421721 is a deficient number, since it is larger than the sum of its proper divisors (844386765623).

9288254421721 is a wasteful number, since it uses less digits than its factorization.

9288254421721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844386765622.

The product of its digits is 5160960, while the sum is 55.

The spelling of 9288254421721 in words is "nine trillion, two hundred eighty-eight billion, two hundred fifty-four million, four hundred twenty-one thousand, seven hundred twenty-one".