21544246143234 has 16 divisors (see below), whose sum is σ = 47876102540640. Its totient is φ = 7181415381060.

The previous prime is 21544246143163. The next prime is 21544246143239. The reversal of 21544246143234 is 43234164244512.

21544246143234 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 4 + 2 + 4 + 614 + 3 + 23 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 21544246143234.

It is not an unprimeable number, because it can be changed into a prime (21544246143239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199483760532 + ... + 199483760639.

It is an arithmetic number, because the mean of its divisors is an integer number (2992256408790).

Almost surely, 2^{21544246143234} is an apocalyptic number.

21544246143234 is an abundant number, since it is smaller than the sum of its proper divisors (26331856397406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21544246143234 is a wasteful number, since it uses less digits than its factorization.

21544246143234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398967521182 (or 398967521176 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 45.

The spelling of 21544246143234 in words is "twenty-one trillion, five hundred forty-four billion, two hundred forty-six million, one hundred forty-three thousand, two hundred thirty-four".