21334053542 has 32 divisors (see below), whose sum is σ = 34277297472. Its totient is φ = 9923364864.

The previous prime is 21334053527. The next prime is 21334053599. The reversal of 21334053542 is 24535043312.

It is a junction number, because it is equal to n+sod(n) for n = 21334053499 and 21334053508.

It is a congruent number.

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, 1425623 + ... + 1440509.

It is an arithmetic number, because the mean of its divisors is an integer number (1071165546).

Almost surely, 2^21334053542 is an apocalyptic number.

21334053542 is a deficient number, since it is larger than the sum of its proper divisors (12943243930).

21334053542 is a wasteful number, since it uses less digits than its factorization.

21334053542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15392.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 21334053542 its reverse (24535043312), we get a palindrome (45869096854).

The spelling of 21334053542 in words is "twenty-one billion, three hundred thirty-four million, fifty-three thousand, five hundred forty-two".