21741545442152 has 64 divisors (see below), whose sum is σ = 41997281726400. Its totient is φ = 10545860344320.

The previous prime is 21741545442103. The next prime is 21741545442161. The reversal of 21741545442152 is 25124454514712.

It is a happy number.

It is a super-2 number, since 2×21741545442152² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21741545442097 and 21741545442106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48779924 + ... + 49223612.

It is an arithmetic number, because the mean of its divisors is an integer number (656207526975).

Almost surely, 2^{21741545442152} is an apocalyptic number.

It is an amenable number.

21741545442152 is a deficient number, since it is larger than the sum of its proper divisors (20255736284248).

21741545442152 is a wasteful number, since it uses less digits than its factorization.

21741545442152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444706 (or 444702 counting only the distinct ones).

The product of its digits is 1792000, while the sum is 47.

Adding to 21741545442152 its reverse (25124454514712), we get a palindrome (46865999956864).

The spelling of 21741545442152 in words is "twenty-one trillion, seven hundred forty-one billion, five hundred forty-five million, four hundred forty-two thousand, one hundred fifty-two".