6221415140 has 12 divisors (see below), whose sum is σ = 13064971836. Its totient is φ = 2488566048.

The previous prime is 6221415131. The next prime is 6221415143. The reversal of 6221415140 is 415141226.

It can be written as a sum of positive squares in 2 ways, for example, as 4342019236 + 1879395904 = 65894^2 + 43352^2 .

It is not an unprimeable number, because it can be changed into a prime (6221415143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155535359 + ... + 155535398.

It is an arithmetic number, because the mean of its divisors is an integer number (1088747653).

Almost surely, 2^6221415140 is an apocalyptic number.

It is an amenable number.

6221415140 is an abundant number, since it is smaller than the sum of its proper divisors (6843556696).

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

6221415140 is a wasteful number, since it uses less digits than its factorization.

6221415140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311070766 (or 311070764 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 6221415140 is about 78875.9477914529. The cubic root of 6221415140 is about 1839.2032565778.

Adding to 6221415140 its reverse (415141226), we get a palindrome (6636556366).

The spelling of 6221415140 in words is "six billion, two hundred twenty-one million, four hundred fifteen thousand, one hundred forty".