20441264520 has 32 divisors (see below), whose sum is σ = 61323793920. Its totient is φ = 5451003840.

The previous prime is 20441264489. The next prime is 20441264521. The reversal of 20441264520 is 2546214402.

It is a super-2 number, since 2×20441264520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20441264521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85171816 + ... + 85172055.

It is an arithmetic number, because the mean of its divisors is an integer number (1916368560).

Almost surely, 2^20441264520 is an apocalyptic number.

20441264520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20441264520 is an abundant number, since it is smaller than the sum of its proper divisors (40882529400).

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

20441264520 is a wasteful number, since it uses less digits than its factorization.

20441264520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170343885 (or 170343881 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 20441264520 its reverse (2546214402), we get a palindrome (22987478922).

The spelling of 20441264520 in words is "twenty billion, four hundred forty-one million, two hundred sixty-four thousand, five hundred twenty".