6520104420 has 48 divisors (see below), whose sum is σ = 18265708608. Its totient is φ = 1737797760.

The previous prime is 6520104413. The next prime is 6520104433. The reversal of 6520104420 is 244010256.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93642 + ... + 147678.

It is an arithmetic number, because the mean of its divisors is an integer number (380535596).

Almost surely, 2^6520104420 is an apocalyptic number.

6520104420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6520104420 is an abundant number, since it is smaller than the sum of its proper divisors (11745604188).

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

6520104420 is a wasteful number, since it uses less digits than its factorization.

6520104420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56060 (or 56058 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 6520104420 is about 80747.1635415140. The cubic root of 6520104420 is about 1868.1776999141.

Adding to 6520104420 its reverse (244010256), we get a palindrome (6764114676).

The spelling of 6520104420 in words is "six billion, five hundred twenty million, one hundred four thousand, four hundred twenty".