16465661645 has 16 divisors (see below), whose sum is σ = 19828271232. Its totient is φ = 13126272960.

The previous prime is 16465661603. The next prime is 16465661651. The reversal of 16465661645 is 54616656461.

It is not a de Polignac number, because 16465661645 - 2¹⁰ = 16465660621 is a prime.

It is a super-3 number, since 3×16465661645³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16465661593 and 16465661602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815094 + ... + 2820936.

It is an arithmetic number, because the mean of its divisors is an integer number (1239266952).

Almost surely, 2^16465661645 is an apocalyptic number.

It is an amenable number.

16465661645 is a deficient number, since it is larger than the sum of its proper divisors (3362609587).

16465661645 is a wasteful number, since it uses less digits than its factorization.

16465661645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732.

The product of its digits is 3110400, while the sum is 50.

The spelling of 16465661645 in words is "sixteen billion, four hundred sixty-five million, six hundred sixty-one thousand, six hundred forty-five".