18212678212343 has 8 divisors (see below), whose sum is σ = 18638002015248. Its totient is φ = 17787435007104.

The previous prime is 18212678212277. The next prime is 18212678212349. The reversal of 18212678212343 is 34321287621281.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18212678212343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18212678212291 and 18212678212300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18212678212349) 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, 19692080 + ... + 20596197.

It is an arithmetic number, because the mean of its divisors is an integer number (2329750251906).

Almost surely, 2^{18212678212343} is an apocalyptic number.

18212678212343 is a deficient number, since it is larger than the sum of its proper divisors (425323802905).

18212678212343 is a wasteful number, since it uses less digits than its factorization.

18212678212343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40298833.

The product of its digits is 1548288, while the sum is 50.

The spelling of 18212678212343 in words is "eighteen trillion, two hundred twelve billion, six hundred seventy-eight million, two hundred twelve thousand, three hundred forty-three".