6261221244 has 48 divisors (see below), whose sum is σ = 15485008896. Its totient is φ = 1962259200.

The previous prime is 6261221243. The next prime is 6261221251. The reversal of 6261221244 is 4421221626.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6261221243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186679 + ... + 217649.

It is an arithmetic number, because the mean of its divisors is an integer number (322604352).

Almost surely, 2^6261221244 is an apocalyptic number.

It is an amenable number.

6261221244 is an abundant number, since it is smaller than the sum of its proper divisors (9223787652).

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

6261221244 is a wasteful number, since it uses less digits than its factorization.

6261221244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31986 (or 31984 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 6261221244 is about 79127.8790566258. The cubic root of 6261221244 is about 1843.1174746735.

The spelling of 6261221244 in words is "six billion, two hundred sixty-one million, two hundred twenty-one thousand, two hundred forty-four".