20213335480 has 128 divisors (see below), whose sum is σ = 50794168320. Its totient is φ = 7188963840.

The previous prime is 20213335447. The next prime is 20213335487. The reversal of 20213335480 is 8453331202.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213335487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3591949 + ... + 3597571.

It is an arithmetic number, because the mean of its divisors is an integer number (396829440).

Almost surely, 2^20213335480 is an apocalyptic number.

20213335480 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 20213335480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25397084160).

20213335480 is an abundant number, since it is smaller than the sum of its proper divisors (30580832840).

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

20213335480 is a wasteful number, since it uses less digits than its factorization.

20213335480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901 (or 5897 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20213335480 its reverse (8453331202), we get a palindrome (28666666682).

The spelling of 20213335480 in words is "twenty billion, two hundred thirteen million, three hundred thirty-five thousand, four hundred eighty".