16631032066568 has 8 divisors (see below), whose sum is σ = 31183185124830. Its totient is φ = 8315516033280.

The previous prime is 16631032066549. The next prime is 16631032066637. The reversal of 16631032066568 is 86566023013661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13133825379844 + 3497206686724 = 3624062^2 + 1870082^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039439504153 + ... + 1039439504168.

Almost surely, 2^{16631032066568} is an apocalyptic number.

It is an amenable number.

16631032066568 is a deficient number, since it is larger than the sum of its proper divisors (14552153058262).

16631032066568 is a wasteful number, since it uses less digits than its factorization.

16631032066568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078879008327 (or 2078879008323 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 16631032066568 in words is "sixteen trillion, six hundred thirty-one billion, thirty-two million, sixty-six thousand, five hundred sixty-eight".