21542431114 has 8 divisors (see below), whose sum is σ = 32320416960. Its totient is φ = 10768958796.

The previous prime is 21542431087. The next prime is 21542431117. The reversal of 21542431114 is 41113424512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21542431117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116424 + ... + 1135555.

It is an arithmetic number, because the mean of its divisors is an integer number (4040052120).

Almost surely, 2^21542431114 is an apocalyptic number.

21542431114 is a deficient number, since it is larger than the sum of its proper divisors (10777985846).

21542431114 is a wasteful number, since it uses less digits than its factorization.

21542431114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256764.

The product of its digits is 3840, while the sum is 28.

Adding to 21542431114 its reverse (41113424512), we get a palindrome (62655855626).

The spelling of 21542431114 in words is "twenty-one billion, five hundred forty-two million, four hundred thirty-one thousand, one hundred fourteen".