21386383333 has 8 divisors (see below), whose sum is σ = 25879321152. Its totient is φ = 17252880576.

The previous prime is 21386383331. The next prime is 21386383339. The reversal of 21386383333 is 33338368312.

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

It is not a de Polignac number, because 21386383333 - 2¹ = 21386383331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21386383333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21386383331) 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, 89858635 + ... + 89858872.

It is an arithmetic number, because the mean of its divisors is an integer number (3234915144).

Almost surely, 2^21386383333 is an apocalyptic number.

It is an amenable number.

21386383333 is a deficient number, since it is larger than the sum of its proper divisors (4492937819).

21386383333 is a wasteful number, since it uses less digits than its factorization.

21386383333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179717531.

The product of its digits is 559872, while the sum is 43.

The spelling of 21386383333 in words is "twenty-one billion, three hundred eighty-six million, three hundred eighty-three thousand, three hundred thirty-three".