16663462566 has 16 divisors (see below), whose sum is σ = 33358289664. Its totient is φ = 5549260104.

The previous prime is 16663462523. The next prime is 16663462573. The reversal of 16663462566 is 66526436661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299946 + ... + 1312701.

It is an arithmetic number, because the mean of its divisors is an integer number (2084893104).

Almost surely, 2^16663462566 is an apocalyptic number.

16663462566 is an abundant number, since it is smaller than the sum of its proper divisors (16694827098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16663462566 is a wasteful number, since it uses less digits than its factorization.

16663462566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613715.

The product of its digits is 5598720, while the sum is 51.

The spelling of 16663462566 in words is "sixteen billion, six hundred sixty-three million, four hundred sixty-two thousand, five hundred sixty-six".