16531285465568 has 48 divisors (see below), whose sum is σ = 32974584859440. Its totient is φ = 8157142895616.

The previous prime is 16531285465561. The next prime is 16531285465601. The reversal of 16531285465568 is 86556458213561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16531285465561) 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, 4059755 + ... + 7038762.

It is an arithmetic number, because the mean of its divisors is an integer number (686970517905).

Almost surely, 2^{16531285465568} is an apocalyptic number.

It is an amenable number.

16531285465568 is a deficient number, since it is larger than the sum of its proper divisors (16443299393872).

16531285465568 is a wasteful number, since it uses less digits than its factorization.

16531285465568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11099139 (or 11099131 counting only the distinct ones).

The product of its digits is 207360000, while the sum is 65.

The spelling of 16531285465568 in words is "sixteen trillion, five hundred thirty-one billion, two hundred eighty-five million, four hundred sixty-five thousand, five hundred sixty-eight".