21106162617 has 16 divisors (see below), whose sum is σ = 28308372480. Its totient is φ = 13987418000.

The previous prime is 21106162601. The next prime is 21106162631. The reversal of 21106162617 is 71626160112.

It is not a de Polignac number, because 21106162617 - 2⁴ = 21106162601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21106162657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2353492 + ... + 2362442.

It is an arithmetic number, because the mean of its divisors is an integer number (1769273280).

Almost surely, 2^21106162617 is an apocalyptic number.

It is an amenable number.

21106162617 is a deficient number, since it is larger than the sum of its proper divisors (7202209863).

21106162617 is a wasteful number, since it uses less digits than its factorization.

21106162617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13524.

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 21106162617 in words is "twenty-one billion, one hundred six million, one hundred sixty-two thousand, six hundred seventeen".