21612616626118 has 64 divisors (see below), whose sum is σ = 37784037888000. Its totient is φ = 9080455570560.

The previous prime is 21612616626103. The next prime is 21612616626151. The reversal of 21612616626118 is 81162661621612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515289028 + ... + 515330968.

It is an arithmetic number, because the mean of its divisors is an integer number (590375592000).

Almost surely, 2^{21612616626118} is an apocalyptic number.

21612616626118 is a deficient number, since it is larger than the sum of its proper divisors (16171421261882).

21612616626118 is a wasteful number, since it uses less digits than its factorization.

21612616626118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44645.

The product of its digits is 497664, while the sum is 49.

The spelling of 21612616626118 in words is "twenty-one trillion, six hundred twelve billion, six hundred sixteen million, six hundred twenty-six thousand, one hundred eighteen".