21833384053857 has 8 divisors (see below), whose sum is σ = 30376882161984. Its totient is φ = 13922737657488.

The previous prime is 21833384053813. The next prime is 21833384053909. The reversal of 21833384053857 is 75835048333812.

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

It is not a de Polignac number, because 21833384053857 - 2¹⁹ = 21833383529569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21833384053857.

It is not an unprimeable number, because it can be changed into a prime (21833384053757) 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, 158212927858 + ... + 158212927995.

It is an arithmetic number, because the mean of its divisors is an integer number (3797110270248).

Almost surely, 2^{21833384053857} is an apocalyptic number.

It is an amenable number.

21833384053857 is a deficient number, since it is larger than the sum of its proper divisors (8543498108127).

21833384053857 is a wasteful number, since it uses less digits than its factorization.

21833384053857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316425855879.

The product of its (nonzero) digits is 58060800, while the sum is 60.

The spelling of 21833384053857 in words is "twenty-one trillion, eight hundred thirty-three billion, three hundred eighty-four million, fifty-three thousand, eight hundred fifty-seven".