21432404411433 has 16 divisors (see below), whose sum is σ = 31751888671360. Its totient is φ = 14288189313168.

The previous prime is 21432404411419. The next prime is 21432404411441. The reversal of 21432404411433 is 33411440423412.

21432404411433 is a `hidden beast` number, since 2 + 1 + 4 + 32 + 40 + 441 + 143 + 3 = 666.

It is not a de Polignac number, because 21432404411433 - 2⁵ = 21432404411401 is a prime.

It is a super-2 number, since 2×21432404411433² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21432406411433) 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, 2875716 + ... + 7150842.

It is an arithmetic number, because the mean of its divisors is an integer number (1984493041960).

Almost surely, 2^{21432404411433} is an apocalyptic number.

It is an amenable number.

21432404411433 is a deficient number, since it is larger than the sum of its proper divisors (10319484259927).

21432404411433 is a wasteful number, since it uses less digits than its factorization.

21432404411433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460813 (or 4460807 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 21432404411433 its reverse (33411440423412), we get a palindrome (54843844834845).

The spelling of 21432404411433 in words is "twenty-one trillion, four hundred thirty-two billion, four hundred four million, four hundred eleven thousand, four hundred thirty-three".