20352011064 has 128 divisors (see below), whose sum is σ = 64784793600. Its totient is φ = 5173741440.

The previous prime is 20352011051. The next prime is 20352011083. The reversal of 20352011064 is 46011025302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 30304 + ... + 204015.

It is an arithmetic number, because the mean of its divisors is an integer number (506131200).

Almost surely, 2^20352011064 is an apocalyptic number.

20352011064 is a gapful number since it is divisible by the number (24) 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 20352011064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32392396800).

20352011064 is an abundant number, since it is smaller than the sum of its proper divisors (44432782536).

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

20352011064 is a wasteful number, since it uses less digits than its factorization.

20352011064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234393 (or 234389 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20352011064 its reverse (46011025302), we get a palindrome (66363036366).

The spelling of 20352011064 in words is "twenty billion, three hundred fifty-two million, eleven thousand, sixty-four".