18884255712 has 96 divisors (see below), whose sum is σ = 56701919232. Its totient is φ = 5390820864.

The previous prime is 18884255701. The next prime is 18884255713. The reversal of 18884255712 is 21755248881.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×18884255712² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18884255713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803553 + ... + 826719.

It is an arithmetic number, because the mean of its divisors is an integer number (590644992).

Almost surely, 2^18884255712 is an apocalyptic number.

18884255712 is a gapful number since it is divisible by the number (12) 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 18884255712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28350959616).

18884255712 is an abundant number, since it is smaller than the sum of its proper divisors (37817663520).

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

18884255712 is a wasteful number, since it uses less digits than its factorization.

18884255712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24400 (or 24392 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 51.

The spelling of 18884255712 in words is "eighteen billion, eight hundred eighty-four million, two hundred fifty-five thousand, seven hundred twelve".