16081909880 has 32 divisors (see below), whose sum is σ = 36197202240. Its totient is φ = 6430469760.

The previous prime is 16081909873. The next prime is 16081909891. The reversal of 16081909880 is 8890918061.

It is a happy number.

It is a super-2 number, since 2×16081909880² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44177 + ... + 184703.

It is an arithmetic number, because the mean of its divisors is an integer number (1131162570).

Almost surely, 2^16081909880 is an apocalyptic number.

16081909880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16081909880 is an abundant number, since it is smaller than the sum of its proper divisors (20115292360).

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

16081909880 is a wasteful number, since it uses less digits than its factorization.

16081909880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143399 (or 143395 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 50.

The spelling of 16081909880 in words is "sixteen billion, eighty-one million, nine hundred nine thousand, eight hundred eighty".