21432301429 has 16 divisors (see below), whose sum is σ = 26752199040. Its totient is φ = 16680864960.

The previous prime is 21432301381. The next prime is 21432301447. The reversal of 21432301429 is 92410323412.

It is a cyclic number.

It is not a de Polignac number, because 21432301429 - 2³¹ = 19284817781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21432301429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432301469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97474 + ... + 228835.

It is an arithmetic number, because the mean of its divisors is an integer number (1672012440).

Almost surely, 2^21432301429 is an apocalyptic number.

It is an amenable number.

21432301429 is a deficient number, since it is larger than the sum of its proper divisors (5319897611).

21432301429 is a wasteful number, since it uses less digits than its factorization.

21432301429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327180.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 21432301429 in words is "twenty-one billion, four hundred thirty-two million, three hundred one thousand, four hundred twenty-nine".