16619402808 has 96 divisors (see below), whose sum is σ = 47596348800. Its totient is φ = 5230310400.

The previous prime is 16619402803. The next prime is 16619402819. The reversal of 16619402808 is 80820491661.

16619402808 is a `hidden beast` number, since 1 + 6 + 619 + 4 + 0 + 28 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16619402803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708 + ... + 182316.

It is an arithmetic number, because the mean of its divisors is an integer number (495795300).

Almost surely, 2^16619402808 is an apocalyptic number.

16619402808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16619402808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23798174400).

16619402808 is an abundant number, since it is smaller than the sum of its proper divisors (30976945992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16619402808 is a wasteful number, since it uses less digits than its factorization.

16619402808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181693 (or 181686 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 16619402808 in words is "sixteen billion, six hundred nineteen million, four hundred two thousand, eight hundred eight".