21610563053 has 8 divisors (see below), whose sum is σ = 21823149600. Its totient is φ = 21398173360.

The previous prime is 21610563043. The next prime is 21610563067. The reversal of 21610563053 is 35036501612.

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 21610563053 - 2⁸ = 21610562797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21610563043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176483 + ... + 272703.

It is an arithmetic number, because the mean of its divisors is an integer number (2727893700).

Almost surely, 2^21610563053 is an apocalyptic number.

It is an amenable number.

21610563053 is a deficient number, since it is larger than the sum of its proper divisors (212586547).

21610563053 is a wasteful number, since it uses less digits than its factorization.

21610563053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98427.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 21610563053 in words is "twenty-one billion, six hundred ten million, five hundred sixty-three thousand, fifty-three".