21114382433 has 2 divisors, whose sum is σ = 21114382434. Its totient is φ = 21114382432.

The previous prime is 21114382423. The next prime is 21114382447. The reversal of 21114382433 is 33428341112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20813255824 + 301126609 = 144268^2 + 17353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21114382433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21114382433.

It is not a weakly prime, because it can be changed into another prime (21114382403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557191216 + 10557191217.

It is an arithmetic number, because the mean of its divisors is an integer number (10557191217).

Almost surely, 2^21114382433 is an apocalyptic number.

It is an amenable number.

21114382433 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114382433 is an equidigital number, since it uses as much as digits as its factorization.

21114382433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The spelling of 21114382433 in words is "twenty-one billion, one hundred fourteen million, three hundred eighty-two thousand, four hundred thirty-three".