18155483507880 has 48 divisors (see below), whose sum is σ = 59005321401780. Its totient is φ = 4841462268672.

The previous prime is 18155483507879. The next prime is 18155483507927. The reversal of 18155483507880 is 8870538455181.

18155483507880 is a `hidden beast` number, since 1 + 8 + 1 + 5 + 5 + 48 + 3 + 507 + 8 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17974564288164 + 180919219716 = 4239642^2 + 425346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25215948957 + ... + 25215949676.

Almost surely, 2^{18155483507880} is an apocalyptic number.

18155483507880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18155483507880 is an abundant number, since it is smaller than the sum of its proper divisors (40849837893900).

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

18155483507880 is a wasteful number, since it uses less digits than its factorization.

18155483507880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50431898650 (or 50431898643 counting only the distinct ones).

The product of its (nonzero) digits is 43008000, while the sum is 63.

The spelling of 18155483507880 in words is "eighteen trillion, one hundred fifty-five billion, four hundred eighty-three million, five hundred seven thousand, eight hundred eighty".