21044565000345 has 32 divisors (see below), whose sum is σ = 35496995880960. Its totient is φ = 10630610723520.

The previous prime is 21044565000337. The next prime is 21044565000367. The reversal of 21044565000345 is 54300056544012.

It is not a de Polignac number, because 21044565000345 - 2³ = 21044565000337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481436965 + ... + 481480674.

It is an arithmetic number, because the mean of its divisors is an integer number (1109281121280).

Almost surely, 2^{21044565000345} is an apocalyptic number.

It is an amenable number.

21044565000345 is a deficient number, since it is larger than the sum of its proper divisors (14452430880615).

21044565000345 is a wasteful number, since it uses less digits than its factorization.

21044565000345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962917725.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 21044565000345 in words is "twenty-one trillion, forty-four billion, five hundred sixty-five million, three hundred forty-five", and thus it is an aban number.