21610316054 has 8 divisors (see below), whose sum is σ = 34322266728. Its totient is φ = 10169560480.

The previous prime is 21610316053. The next prime is 21610316087. The reversal of 21610316054 is 45061301612.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21610316051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317798732 + ... + 317798799.

It is an arithmetic number, because the mean of its divisors is an integer number (4290283341).

Almost surely, 2^21610316054 is an apocalyptic number.

21610316054 is a deficient number, since it is larger than the sum of its proper divisors (12711950674).

21610316054 is a wasteful number, since it uses less digits than its factorization.

21610316054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635597550.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 21610316054 its reverse (45061301612), we get a palindrome (66671617666).

The spelling of 21610316054 in words is "twenty-one billion, six hundred ten million, three hundred sixteen thousand, fifty-four".