20420246200420 has 96 divisors (see below), whose sum is σ = 46888402369536. Its totient is φ = 7408489622400.

The previous prime is 20420246200381. The next prime is 20420246200441. The reversal of 20420246200420 is 2400264202402.

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, 933998409 + ... + 934020271.

It is an arithmetic number, because the mean of its divisors is an integer number (488420858016).

Almost surely, 2^{20420246200420} is an apocalyptic number.

20420246200420 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 20420246200420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23444201184768).

20420246200420 is an abundant number, since it is smaller than the sum of its proper divisors (26468156169116).

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

20420246200420 is a wasteful number, since it uses less digits than its factorization.

20420246200420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31441 (or 31439 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The spelling of 20420246200420 in words is "twenty trillion, four hundred twenty billion, two hundred forty-six million, two hundred thousand, four hundred twenty".