21706016606162 has 12 divisors (see below), whose sum is σ = 37874784078270. Its totient is φ = 9302578545456.

The previous prime is 21706016606149. The next prime is 21706016606177. The reversal of 21706016606162 is 26160661060712.

It can be written as a sum of positive squares in only one way, i.e., 21692296935001 + 13719671161 = 4657499^2 + 117131^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110744982587 + ... + 110744982782.

Almost surely, 2^{21706016606162} is an apocalyptic number.

21706016606162 is a deficient number, since it is larger than the sum of its proper divisors (16168767472108).

21706016606162 is a wasteful number, since it uses less digits than its factorization.

21706016606162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221489965385 (or 221489965378 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

Adding to 21706016606162 its reverse (26160661060712), we get a palindrome (47866677666874).

The spelling of 21706016606162 in words is "twenty-one trillion, seven hundred six billion, sixteen million, six hundred six thousand, one hundred sixty-two".