21343180827 has 8 divisors (see below), whose sum is σ = 28581844240. Its totient is φ = 14166652320.

The previous prime is 21343180811. The next prime is 21343180841. The reversal of 21343180827 is 72808134312.

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

It is not a de Polignac number, because 21343180827 - 2⁴ = 21343180811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21343180847) 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, 15532924 + ... + 15534297.

It is an arithmetic number, because the mean of its divisors is an integer number (3572730530).

Almost surely, 2^21343180827 is an apocalyptic number.

21343180827 is a deficient number, since it is larger than the sum of its proper divisors (7238663413).

21343180827 is a wasteful number, since it uses less digits than its factorization.

21343180827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31067453.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 21343180827 in words is "twenty-one billion, three hundred forty-three million, one hundred eighty thousand, eight hundred twenty-seven".