21441025045040 has 40 divisors (see below), whose sum is σ = 50552501316768. Its totient is φ = 8455615508480.

The previous prime is 21441025045007. The next prime is 21441025045057. The reversal of 21441025045040 is 4054052014412.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 21441025044988 and 21441025045006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1887408497 + ... + 1887419856.

Almost surely, 2^{21441025045040} is an apocalyptic number.

21441025045040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21441025045040 is an abundant number, since it is smaller than the sum of its proper divisors (29111476271728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21441025045040 is a wasteful number, since it uses less digits than its factorization.

21441025045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774828437 (or 3774828431 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 21441025045040 its reverse (4054052014412), we get a palindrome (25495077059452).

The spelling of 21441025045040 in words is "twenty-one trillion, four hundred forty-one billion, twenty-five million, forty-five thousand, forty".