16555232878180 has 48 divisors (see below), whose sum is σ = 36643367376000. Its totient is φ = 6265403744256.

The previous prime is 16555232878139. The next prime is 16555232878181. The reversal of 16555232878180 is 8187823255561.

It is a super-2 number, since 2×16555232878180² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16555232878181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28034440 + ... + 28618879.

It is an arithmetic number, because the mean of its divisors is an integer number (763403487000).

Almost surely, 2^{16555232878180} is an apocalyptic number.

16555232878180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16555232878180 is an abundant number, since it is smaller than the sum of its proper divisors (20088134497820).

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

16555232878180 is a wasteful number, since it uses less digits than its factorization.

16555232878180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56654116 (or 56654114 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 61.

The spelling of 16555232878180 in words is "sixteen trillion, five hundred fifty-five billion, two hundred thirty-two million, eight hundred seventy-eight thousand, one hundred eighty".