21432039259 has 2 divisors, whose sum is σ = 21432039260. Its totient is φ = 21432039258.

The previous prime is 21432039199. The next prime is 21432039269. The reversal of 21432039259 is 95293023412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21432039259 - 2³¹ = 19284555611 is a prime.

It is not a weakly prime, because it can be changed into another prime (21432039269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716019629 + 10716019630.

It is an arithmetic number, because the mean of its divisors is an integer number (10716019630).

Almost surely, 2^21432039259 is an apocalyptic number.

21432039259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21432039259 is an equidigital number, since it uses as much as digits as its factorization.

21432039259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

It can be divided in two parts, 2143 and 2039259, that added together give a palindrome (2041402).

The spelling of 21432039259 in words is "twenty-one billion, four hundred thirty-two million, thirty-nine thousand, two hundred fifty-nine".