16490678688 has 144 divisors (see below), whose sum is σ = 52247534976. Its totient is φ = 4890808320.

The previous prime is 16490678669. The next prime is 16490678707. The reversal of 16490678688 is 88687609461.

16490678688 is a `hidden beast` number, since 1 + 6 + 490 + 67 + 8 + 6 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (16490678669) and next prime (16490678707).

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93520 + ... + 204272.

It is an arithmetic number, because the mean of its divisors is an integer number (362830104).

Almost surely, 2^16490678688 is an apocalyptic number.

16490678688 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 16490678688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26123767488).

16490678688 is an abundant number, since it is smaller than the sum of its proper divisors (35756856288).

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

16490678688 is a wasteful number, since it uses less digits than its factorization.

16490678688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110827 (or 110816 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 16490678688 in words is "sixteen billion, four hundred ninety million, six hundred seventy-eight thousand, six hundred eighty-eight".