21373333383 has 8 divisors (see below), whose sum is σ = 29267988208. Its totient is φ = 13863783744.

The previous prime is 21373333337. The next prime is 21373333391. The reversal of 21373333383 is 38333337312.

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

It is not a de Polignac number, because 21373333383 - 2¹⁶ = 21373267847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21373333313) 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, 96276166 + ... + 96276387.

It is an arithmetic number, because the mean of its divisors is an integer number (3658498526).

Almost surely, 2^21373333383 is an apocalyptic number.

21373333383 is a deficient number, since it is larger than the sum of its proper divisors (7894654825).

21373333383 is a wasteful number, since it uses less digits than its factorization.

21373333383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192552593.

The product of its digits is 244944, while the sum is 39.

The spelling of 21373333383 in words is "twenty-one billion, three hundred seventy-three million, three hundred thirty-three thousand, three hundred eighty-three".