16456516685 has 16 divisors (see below), whose sum is σ = 22571815296. Its totient is φ = 11283029568.

The previous prime is 16456516669. The next prime is 16456516753. The reversal of 16456516685 is 58661565461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16456516685 - 2⁴ = 16456516669 is a prime.

It is a Duffinian number.

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, 299354 + ... + 350036.

It is an arithmetic number, because the mean of its divisors is an integer number (1410738456).

Almost surely, 2^16456516685 is an apocalyptic number.

It is an amenable number.

16456516685 is a deficient number, since it is larger than the sum of its proper divisors (6115298611).

16456516685 is an equidigital number, since it uses as much as digits as its factorization.

16456516685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59972.

The product of its digits is 5184000, while the sum is 53.

The spelling of 16456516685 in words is "sixteen billion, four hundred fifty-six million, five hundred sixteen thousand, six hundred eighty-five".