21616052010654 has 8 divisors (see below), whose sum is σ = 43232104021320. Its totient is φ = 7205350670216.

The previous prime is 21616052010643. The next prime is 21616052010671. The reversal of 21616052010654 is 45601025061612.

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

21616052010654 is an admirable number.

It is a super-2 number, since 2×21616052010654² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801337667549 + ... + 1801337667560.

It is an arithmetic number, because the mean of its divisors is an integer number (5404013002665).

Almost surely, 2^{21616052010654} is an apocalyptic number.

21616052010654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21616052010654 is a wasteful number, since it uses less digits than its factorization.

21616052010654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602675335114.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 21616052010654 in words is "twenty-one trillion, six hundred sixteen billion, fifty-two million, ten thousand, six hundred fifty-four".