16451515066 has 16 divisors (see below), whose sum is σ = 29686944960. Its totient is φ = 6679562400.

The previous prime is 16451515061. The next prime is 16451515127. The reversal of 16451515066 is 66051515461.

It is not an unprimeable number, because it can be changed into a prime (16451515061) 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, 30923635 + ... + 30924166.

It is an arithmetic number, because the mean of its divisors is an integer number (1855434060).

Almost surely, 2^16451515066 is an apocalyptic number.

16451515066 is a deficient number, since it is larger than the sum of its proper divisors (13235429894).

16451515066 is a wasteful number, since it uses less digits than its factorization.

16451515066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61847829.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 16451515066 in words is "sixteen billion, four hundred fifty-one million, five hundred fifteen thousand, sixty-six".