21368323294 has 8 divisors (see below), whose sum is σ = 32067462168. Its totient is φ = 10679169240.

The previous prime is 21368323279. The next prime is 21368323307. The reversal of 21368323294 is 49232386312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21368323294.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2490852 + ... + 2499415.

It is an arithmetic number, because the mean of its divisors is an integer number (4008432771).

Almost surely, 2^21368323294 is an apocalyptic number.

21368323294 is a deficient number, since it is larger than the sum of its proper divisors (10699138874).

21368323294 is a wasteful number, since it uses less digits than its factorization.

21368323294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992410.

The product of its digits is 373248, while the sum is 43.

The spelling of 21368323294 in words is "twenty-one billion, three hundred sixty-eight million, three hundred twenty-three thousand, two hundred ninety-four".