21463412442 has 16 divisors (see below), whose sum is σ = 42928522560. Its totient is φ = 7154187872.

The previous prime is 21463412437. The next prime is 21463412489. The reversal of 21463412442 is 24421436412.

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, 143563 + ... + 252065.

It is an arithmetic number, because the mean of its divisors is an integer number (2683032660).

Almost surely, 2^21463412442 is an apocalyptic number.

21463412442 is an abundant number, since it is smaller than the sum of its proper divisors (21465110118).

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

21463412442 is a wasteful number, since it uses less digits than its factorization.

21463412442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141477.

The product of its digits is 36864, while the sum is 33.

Adding to 21463412442 its reverse (24421436412), we get a palindrome (45884848854).

The spelling of 21463412442 in words is "twenty-one billion, four hundred sixty-three million, four hundred twelve thousand, four hundred forty-two".