18155125880 has 32 divisors (see below), whose sum is σ = 41366116800. Its totient is φ = 7170124416.

The previous prime is 18155125853. The next prime is 18155125883. The reversal of 18155125880 is 8852155181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18155125883) 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, 2869487 + ... + 2875806.

It is an arithmetic number, because the mean of its divisors is an integer number (1292691150).

Almost surely, 2^18155125880 is an apocalyptic number.

18155125880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18155125880 is an abundant number, since it is smaller than the sum of its proper divisors (23210990920).

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

18155125880 is a wasteful number, since it uses less digits than its factorization.

18155125880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745383 (or 5745379 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 44.

The spelling of 18155125880 in words is "eighteen billion, one hundred fifty-five million, one hundred twenty-five thousand, eight hundred eighty".