20335345218 has 64 divisors (see below), whose sum is σ = 46795760640. Its totient is φ = 6538924800.

The previous prime is 20335345201. The next prime is 20335345253. The reversal of 20335345218 is 81254353302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511498 + ... + 549818.

It is an arithmetic number, because the mean of its divisors is an integer number (731183760).

Almost surely, 2^20335345218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20335345218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23397880320).

20335345218 is an abundant number, since it is smaller than the sum of its proper divisors (26460415422).

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

20335345218 is a wasteful number, since it uses less digits than its factorization.

20335345218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38680 (or 38674 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20335345218 in words is "twenty billion, three hundred thirty-five million, three hundred forty-five thousand, two hundred eighteen".