21416617706 has 32 divisors (see below), whose sum is σ = 35512914240. Its totient is φ = 9605411200.

The previous prime is 21416617643. The next prime is 21416617727. The reversal of 21416617706 is 60771661412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950240 + ... + 972516.

It is an arithmetic number, because the mean of its divisors is an integer number (1109778570).

Almost surely, 2^21416617706 is an apocalyptic number.

21416617706 is a deficient number, since it is larger than the sum of its proper divisors (14096296534).

21416617706 is a wasteful number, since it uses less digits than its factorization.

21416617706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22870.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 21416617706 in words is "twenty-one billion, four hundred sixteen million, six hundred seventeen thousand, seven hundred six".