16680788380 has 24 divisors (see below), whose sum is σ = 35473072320. Its totient is φ = 6587855040.

The previous prime is 16680788321. The next prime is 16680788381. The reversal of 16680788380 is 8388708661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16680788381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5277151 + ... + 5280310.

It is an arithmetic number, because the mean of its divisors is an integer number (1478044680).

Almost surely, 2^16680788380 is an apocalyptic number.

16680788380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16680788380 is an abundant number, since it is smaller than the sum of its proper divisors (18792283940).

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

16680788380 is a wasteful number, since it uses less digits than its factorization.

16680788380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557549 (or 10557547 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 16680788380 in words is "sixteen billion, six hundred eighty million, seven hundred eighty-eight thousand, three hundred eighty".