21833338382957 has 4 divisors (see below), whose sum is σ = 22297877497536. Its totient is φ = 21368799268380.

The previous prime is 21833338382927. The next prime is 21833338382963. The reversal of 21833338382957 is 75928383333812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21833338382957 - 2¹² = 21833338378861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21833338382893 and 21833338382902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21833338382917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232269557219 + ... + 232269557312.

It is an arithmetic number, because the mean of its divisors is an integer number (5574469374384).

Almost surely, 2^{21833338382957} is an apocalyptic number.

It is an amenable number.

21833338382957 is a deficient number, since it is larger than the sum of its proper divisors (464539114579).

21833338382957 is an equidigital number, since it uses as much as digits as its factorization.

21833338382957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464539114578.

The product of its digits is 156764160, while the sum is 65.

The spelling of 21833338382957 in words is "twenty-one trillion, eight hundred thirty-three billion, three hundred thirty-eight million, three hundred eighty-two thousand, nine hundred fifty-seven".