10343665204521 has 24 divisors (see below), whose sum is σ = 15293464243680. Its totient is φ = 6213411093120.

The previous prime is 10343665204519. The next prime is 10343665204573. The reversal of 10343665204521 is 12540256634301.

It is not a de Polignac number, because 10343665204521 - 2¹ = 10343665204519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10343665224521) 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 23 ways as a sum of consecutive naturals, for example, 126042811 + ... + 126124848.

It is an arithmetic number, because the mean of its divisors is an integer number (637227676820).

Almost surely, 2^{10343665204521} is an apocalyptic number.

10343665204521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10343665204521 is a deficient number, since it is larger than the sum of its proper divisors (4949799039159).

10343665204521 is a wasteful number, since it uses less digits than its factorization.

10343665204521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252167797 (or 252167786 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 10343665204521 in words is "ten trillion, three hundred forty-three billion, six hundred sixty-five million, two hundred four thousand, five hundred twenty-one".