21972893833 has 8 divisors (see below), whose sum is σ = 24527882016. Its totient is φ = 19510814400.

The previous prime is 21972893821. The next prime is 21972893867. The reversal of 21972893833 is 33839827912.

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

It is not a de Polignac number, because 21972893833 - 2³³ = 13382959241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21972893233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23226688 + ... + 23227633.

It is an arithmetic number, because the mean of its divisors is an integer number (3065985252).

Almost surely, 2^21972893833 is an apocalyptic number.

It is an amenable number.

21972893833 is a deficient number, since it is larger than the sum of its proper divisors (2554988183).

21972893833 is a wasteful number, since it uses less digits than its factorization.

21972893833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46454375.

The product of its digits is 3919104, while the sum is 55.

The spelling of 21972893833 in words is "twenty-one billion, nine hundred seventy-two million, eight hundred ninety-three thousand, eight hundred thirty-three".