10408843306521 has 36 divisors (see below), whose sum is σ = 16557790665780. Its totient is φ = 6296281305600.

The previous prime is 10408843306483. The next prime is 10408843306529. The reversal of 10408843306521 is 12560334880401.

10408843306521 is a `hidden beast` number, since 1 + 0 + 4 + 0 + 88 + 43 + 3 + 0 + 6 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1760568074496 + 8648275232025 = 1326864^2 + 2940795^2 .

It is not a de Polignac number, because 10408843306521 - 2¹⁸ = 10408843044377 is a prime.

It is a super-2 number, since 2×10408843306521² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10408843306529) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8605536 + ... + 9740273.

It is an arithmetic number, because the mean of its divisors is an integer number (459938629605).

Almost surely, 2^{10408843306521} is an apocalyptic number.

10408843306521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10408843306521 is a deficient number, since it is larger than the sum of its proper divisors (6148947359259).

10408843306521 is a wasteful number, since it uses less digits than its factorization.

10408843306521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18346358 (or 18346344 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 10408843306521 in words is "ten trillion, four hundred eight billion, eight hundred forty-three million, three hundred six thousand, five hundred twenty-one".