9156802244021 has 4 divisors (see below), whose sum is σ = 9207957564000. Its totient is φ = 9105646924044.

The previous prime is 9156802244011. The next prime is 9156802244027. The reversal of 9156802244021 is 1204422086519.

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 a de Polignac number, because none of the positive numbers 2^k-9156802244021 is a prime.

It is a super-2 number, since 2×9156802244021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9156802244027) 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, 25577659721 + ... + 25577660078.

It is an arithmetic number, because the mean of its divisors is an integer number (2301989391000).

Almost surely, 2^{9156802244021} is an apocalyptic number.

It is an amenable number.

9156802244021 is a deficient number, since it is larger than the sum of its proper divisors (51155319979).

9156802244021 is a wasteful number, since it uses less digits than its factorization.

9156802244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51155319978.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 9156802244021 in words is "nine trillion, one hundred fifty-six billion, eight hundred two million, two hundred forty-four thousand, twenty-one".