16628367840 has 192 divisors, whose sum is σ = 60126312960. Its totient is φ = 3783997440.

The previous prime is 16628367829. The next prime is 16628367863. The reversal of 16628367840 is 4876382661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 758635 + ... + 780245.

It is an arithmetic number, because the mean of its divisors is an integer number (313157880).

Almost surely, 2^16628367840 is an apocalyptic number.

16628367840 is a gapful number since it is divisible by the number (10) 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 16628367840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30063156480).

16628367840 is an abundant number, since it is smaller than the sum of its proper divisors (43497945120).

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

16628367840 is a wasteful number, since it uses less digits than its factorization.

16628367840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21865 (or 21857 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 16628367840 in words is "sixteen billion, six hundred twenty-eight million, three hundred sixty-seven thousand, eight hundred forty".