21532114434431 has 8 divisors (see below), whose sum is σ = 22431140298000. Its totient is φ = 20650891063360.

The previous prime is 21532114434401. The next prime is 21532114434433. The reversal of 21532114434431 is 13443441123512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21532114434431 is a prime.

It is a super-2 number, since 2×21532114434431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532114434433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4450620656 + ... + 4450625493.

It is an arithmetic number, because the mean of its divisors is an integer number (2803892537250).

Almost surely, 2^{21532114434431} is an apocalyptic number.

21532114434431 is a deficient number, since it is larger than the sum of its proper divisors (899025863569).

21532114434431 is an equidigital number, since it uses as much as digits as its factorization.

21532114434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8901246249.

The product of its digits is 138240, while the sum is 38.

Adding to 21532114434431 its reverse (13443441123512), we get a palindrome (34975555557943).

The spelling of 21532114434431 in words is "twenty-one trillion, five hundred thirty-two billion, one hundred fourteen million, four hundred thirty-four thousand, four hundred thirty-one".