20018328876 has 576 divisors, whose sum is σ = 68190312960. Its totient is φ = 5029516800.

The previous prime is 20018328871. The next prime is 20018328923. The reversal of 20018328876 is 67882381002.

It is not an unprimeable number, because it can be changed into a prime (20018328871) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 198201226 + ... + 198201326.

It is an arithmetic number, because the mean of its divisors is an integer number (118385960).

Almost surely, 2^20018328876 is an apocalyptic number.

20018328876 is a gapful number since it is divisible by the number (26) 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 20018328876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34095156480).

20018328876 is an abundant number, since it is smaller than the sum of its proper divisors (48171984084).

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

20018328876 is a wasteful number, since it uses less digits than its factorization.

20018328876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 20018328876 in words is "twenty billion, eighteen million, three hundred twenty-eight thousand, eight hundred seventy-six".