20346502666220 has 96 divisors (see below), whose sum is σ = 45687597177600. Its totient is φ = 7589038535424.

The previous prime is 20346502666199. The next prime is 20346502666223. The reversal of 20346502666220 is 2266620564302.

It is not an unprimeable number, because it can be changed into a prime (20346502666223) 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, 7285187 + ... + 9683333.

It is an arithmetic number, because the mean of its divisors is an integer number (475912470600).

Almost surely, 2^{20346502666220} is an apocalyptic number.

20346502666220 is a gapful number since it is divisible by the number (20) 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 20346502666220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22843798588800).

20346502666220 is an abundant number, since it is smaller than the sum of its proper divisors (25341094511380).

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

20346502666220 is a wasteful number, since it uses less digits than its factorization.

20346502666220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398527 (or 2398525 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 20346502666220 in words is "twenty trillion, three hundred forty-six billion, five hundred two million, six hundred sixty-six thousand, two hundred twenty".