16617638538264 has 32 divisors (see below), whose sum is σ = 41947437093120. Its totient is φ = 5485434079776.

The previous prime is 16617638538257. The next prime is 16617638538283. The reversal of 16617638538264 is 46283583671661.

It is a happy number.

It is a super-2 number, since 2×16617638538264² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16617638538195 and 16617638538204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3361170372 + ... + 3361175315.

It is an arithmetic number, because the mean of its divisors is an integer number (1310857409160).

Almost surely, 2^{16617638538264} is an apocalyptic number.

It is an amenable number.

16617638538264 is an abundant number, since it is smaller than the sum of its proper divisors (25329798554856).

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

16617638538264 is a wasteful number, since it uses less digits than its factorization.

16617638538264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722345799 (or 6722345795 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 66.

The spelling of 16617638538264 in words is "sixteen trillion, six hundred seventeen billion, six hundred thirty-eight million, five hundred thirty-eight thousand, two hundred sixty-four".