16326819685 has 16 divisors (see below), whose sum is σ = 21385609920. Its totient is φ = 11867207040.

The previous prime is 16326819647. The next prime is 16326819709. The reversal of 16326819685 is 58691862361.

It is not a de Polignac number, because 16326819685 - 2⁷ = 16326819557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 11746 + ... + 181084.

It is an arithmetic number, because the mean of its divisors is an integer number (1336600620).

Almost surely, 2^16326819685 is an apocalyptic number.

It is an amenable number.

16326819685 is a deficient number, since it is larger than the sum of its proper divisors (5058790235).

16326819685 is a wasteful number, since it uses less digits than its factorization.

16326819685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171108.

The product of its digits is 3732480, while the sum is 55.

The spelling of 16326819685 in words is "sixteen billion, three hundred twenty-six million, eight hundred nineteen thousand, six hundred eighty-five".