21433864083 has 4 divisors (see below), whose sum is σ = 28578485448. Its totient is φ = 14289242720.

The previous prime is 21433864057. The next prime is 21433864139. The reversal of 21433864083 is 38046833412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21433864083 - 2⁶ = 21433864019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21433864043) 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, 3572310678 + ... + 3572310683.

It is an arithmetic number, because the mean of its divisors is an integer number (7144621362).

Almost surely, 2^21433864083 is an apocalyptic number.

21433864083 is a deficient number, since it is larger than the sum of its proper divisors (7144621365).

21433864083 is an equidigital number, since it uses as much as digits as its factorization.

21433864083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144621364.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 21433864083 in words is "twenty-one billion, four hundred thirty-three million, eight hundred sixty-four thousand, eighty-three".