21642013130053 has 8 divisors (see below), whose sum is σ = 22583956627008. Its totient is φ = 20700151833504.

The previous prime is 21642013130039. The next prime is 21642013130107. The reversal of 21642013130053 is 35003131024612.

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

It is a cyclic number.

It is not a de Polignac number, because 21642013130053 - 2²⁹ = 21641476259141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21642013129997 and 21642013130024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21642013140053) by changing a digit.

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, 20011776 + ... + 21065497.

It is an arithmetic number, because the mean of its divisors is an integer number (2822994578376).

Almost surely, 2^{21642013130053} is an apocalyptic number.

21642013130053 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21642013130053 is a deficient number, since it is larger than the sum of its proper divisors (941943496955).

21642013130053 is a wasteful number, since it uses less digits than its factorization.

21642013130053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41100203.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 21642013130053 its reverse (35003131024612), we get a palindrome (56645144154665).

The spelling of 21642013130053 in words is "twenty-one trillion, six hundred forty-two billion, thirteen million, one hundred thirty thousand, fifty-three".