10408843353921 has 4 divisors (see below), whose sum is σ = 13878457805232. Its totient is φ = 6939228902612.

The previous prime is 10408843353899. The next prime is 10408843353949. The reversal of 10408843353921 is 12935334880401.

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 10408843353921 - 2⁷ = 10408843353793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10408843333921) 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, 1734807225651 + ... + 1734807225656.

It is an arithmetic number, because the mean of its divisors is an integer number (3469614451308).

Almost surely, 2^{10408843353921} is an apocalyptic number.

It is an amenable number.

10408843353921 is a deficient number, since it is larger than the sum of its proper divisors (3469614451311).

10408843353921 is an equidigital number, since it uses as much as digits as its factorization.

10408843353921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469614451310.

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 10408843353921 in words is "ten trillion, four hundred eight billion, eight hundred forty-three million, three hundred fifty-three thousand, nine hundred twenty-one".