21343401743 has 8 divisors (see below), whose sum is σ = 21528936000. Its totient is φ = 21158431648.

The previous prime is 21343401721. The next prime is 21343401763. The reversal of 21343401743 is 34710434312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21343401743 - 2⁸ = 21343401487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343401763) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64871 + ... + 216552.

It is an arithmetic number, because the mean of its divisors is an integer number (2691117000).

Almost surely, 2^21343401743 is an apocalyptic number.

21343401743 is a deficient number, since it is larger than the sum of its proper divisors (185534257).

21343401743 is a wasteful number, since it uses less digits than its factorization.

21343401743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282081.

The product of its (nonzero) digits is 24192, while the sum is 32.

The spelling of 21343401743 in words is "twenty-one billion, three hundred forty-three million, four hundred one thousand, seven hundred forty-three".