18798255520 has 192 divisors, whose sum is σ = 50171498496. Its totient is φ = 6595706880.

The previous prime is 18798255467. The next prime is 18798255527. The reversal of 18798255520 is 2555289781.

It is not an unprimeable number, because it can be changed into a prime (18798255527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8269104 + ... + 8271376.

It is an arithmetic number, because the mean of its divisors is an integer number (261309888).

Almost surely, 2^18798255520 is an apocalyptic number.

18798255520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18798255520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25085749248).

18798255520 is an abundant number, since it is smaller than the sum of its proper divisors (31373242976).

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

18798255520 is a wasteful number, since it uses less digits than its factorization.

18798255520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463 (or 2455 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 52.

The spelling of 18798255520 in words is "eighteen billion, seven hundred ninety-eight million, two hundred fifty-five thousand, five hundred twenty".