21442060047 has 16 divisors (see below), whose sum is σ = 28919207520. Its totient is φ = 14129905152.

The previous prime is 21442060027. The next prime is 21442060051. The reversal of 21442060047 is 74006024412.

It is not a de Polignac number, because 21442060047 - 2⁸ = 21442059791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21442059996 and 21442060023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442060027) 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, 1077633 + ... + 1097349.

It is an arithmetic number, because the mean of its divisors is an integer number (1807450470).

Almost surely, 2^21442060047 is an apocalyptic number.

21442060047 is a deficient number, since it is larger than the sum of its proper divisors (7477147473).

21442060047 is a wasteful number, since it uses less digits than its factorization.

21442060047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23882.

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 21442060047 its reverse (74006024412), we get a palindrome (95448084459).

The spelling of 21442060047 in words is "twenty-one billion, four hundred forty-two million, sixty thousand, forty-seven".