21444014411432 has 64 divisors (see below), whose sum is σ = 42300694800000. Its totient is φ = 10177228373760.

The previous prime is 21444014411419. The next prime is 21444014411437. The reversal of 21444014411432 is 23411441044412.

It is a junction number, because it is equal to n+sod(n) for n = 21444014411392 and 21444014411401.

It is not an unprimeable number, because it can be changed into a prime (21444014411437) 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, 3883619 + ... + 7613837.

It is an arithmetic number, because the mean of its divisors is an integer number (660948356250).

Almost surely, 2^{21444014411432} is an apocalyptic number.

It is an amenable number.

21444014411432 is a deficient number, since it is larger than the sum of its proper divisors (20856680388568).

21444014411432 is a wasteful number, since it uses less digits than its factorization.

21444014411432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730674 (or 3730670 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 21444014411432 its reverse (23411441044412), we get a palindrome (44855455455844).

The spelling of 21444014411432 in words is "twenty-one trillion, four hundred forty-four billion, fourteen million, four hundred eleven thousand, four hundred thirty-two".