16488244864 has 128 divisors (see below), whose sum is σ = 40983828480. Its totient is φ = 6433136640.

The previous prime is 16488244837. The next prime is 16488244907. The reversal of 16488244864 is 46844288461.

It is a tau number, because it is divible by the number of its divisors (128).

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, 840609 + ... + 859999.

It is an arithmetic number, because the mean of its divisors is an integer number (320186160).

Almost surely, 2^16488244864 is an apocalyptic number.

16488244864 is a gapful number since it is divisible by the number (14) 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 16488244864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20491914240).

16488244864 is an abundant number, since it is smaller than the sum of its proper divisors (24495583616).

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

16488244864 is a wasteful number, since it uses less digits than its factorization.

16488244864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19498 (or 19486 counting only the distinct ones).

The product of its digits is 9437184, while the sum is 55.

The spelling of 16488244864 in words is "sixteen billion, four hundred eighty-eight million, two hundred forty-four thousand, eight hundred sixty-four".