21344404063023 has 12 divisors (see below), whose sum is σ = 30854724276480. Its totient is φ = 14218563443616.

The previous prime is 21344404062983. The next prime is 21344404063153. The reversal of 21344404063023 is 32036040444312.

21344404063023 is a `hidden beast` number, since 2 + 1 + 344 + 4 + 0 + 4 + 0 + 6 + 302 + 3 = 666.

It is not a de Polignac number, because 21344404063023 - 2⁹ = 21344404062511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344404063823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919926511 + ... + 919949712.

It is an arithmetic number, because the mean of its divisors is an integer number (2571227023040).

Almost surely, 2^{21344404063023} is an apocalyptic number.

21344404063023 is a deficient number, since it is larger than the sum of its proper divisors (9510320213457).

21344404063023 is a wasteful number, since it uses less digits than its factorization.

21344404063023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839877518 (or 1839877515 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 21344404063023 in words is "twenty-one trillion, three hundred forty-four billion, four hundred four million, sixty-three thousand, twenty-three".