21442542523135 has 8 divisors (see below), whose sum is σ = 25933657729536. Its totient is φ = 17018962884000.

The previous prime is 21442542523099. The next prime is 21442542523147. The reversal of 21442542523135 is 53132524524412.

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

It is not a de Polignac number, because 21442542523135 - 2⁹ = 21442542522623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21442542523091 and 21442542523100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16883891116 + ... + 16883892385.

It is an arithmetic number, because the mean of its divisors is an integer number (3241707216192).

Almost surely, 2^{21442542523135} is an apocalyptic number.

21442542523135 is a deficient number, since it is larger than the sum of its proper divisors (4491115206401).

21442542523135 is a wasteful number, since it uses less digits than its factorization.

21442542523135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33767783633.

The product of its digits is 1152000, while the sum is 43.

The spelling of 21442542523135 in words is "twenty-one trillion, four hundred forty-two billion, five hundred forty-two million, five hundred twenty-three thousand, one hundred thirty-five".