21407316457043 has 8 divisors (see below), whose sum is σ = 23353546782720. Its totient is φ = 19461104572680.

The previous prime is 21407316456979. The next prime is 21407316457091. The reversal of 21407316457043 is 34075461370412.

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 21407316457043 - 2⁶ = 21407316456979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21407316457343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124863 + ... + 6879656.

It is an arithmetic number, because the mean of its divisors is an integer number (2919193347840).

Almost surely, 2^{21407316457043} is an apocalyptic number.

21407316457043 is a deficient number, since it is larger than the sum of its proper divisors (1946230325677).

21407316457043 is a wasteful number, since it uses less digits than its factorization.

21407316457043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220657.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 21407316457043 in words is "twenty-one trillion, four hundred seven billion, three hundred sixteen million, four hundred fifty-seven thousand, forty-three".