20666611590014 has 16 divisors (see below), whose sum is σ = 34535716981920. Its totient is φ = 9209524527840.

The previous prime is 20666611590013. The next prime is 20666611590017. The reversal of 20666611590014 is 41009511666602.

It is a super-2 number, since 2×20666611590014² (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 (20666611590013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13704648842 + ... + 13704650349.

It is an arithmetic number, because the mean of its divisors is an integer number (2158482311370).

Almost surely, 2^{20666611590014} is an apocalyptic number.

20666611590014 is a deficient number, since it is larger than the sum of its proper divisors (13869105391906).

20666611590014 is a wasteful number, since it uses less digits than its factorization.

20666611590014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27409299235.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 20666611590014 in words is "twenty trillion, six hundred sixty-six billion, six hundred eleven million, five hundred ninety thousand, fourteen".