21614311720166 has 32 divisors (see below), whose sum is σ = 35743071450240. Its totient is φ = 9720797587200.

The previous prime is 21614311720163. The next prime is 21614311720207. The reversal of 21614311720166 is 66102711341612.

It is a super-2 number, since 2×21614311720166² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21614311720163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6624581 + ... + 9333471.

It is an arithmetic number, because the mean of its divisors is an integer number (1116970982820).

Almost surely, 2^{21614311720166} is an apocalyptic number.

21614311720166 is a deficient number, since it is larger than the sum of its proper divisors (14128759730074).

21614311720166 is a wasteful number, since it uses less digits than its factorization.

21614311720166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712740.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 21614311720166 in words is "twenty-one trillion, six hundred fourteen billion, three hundred eleven million, seven hundred twenty thousand, one hundred sixty-six".