6446269952 has 80 divisors (see below), whose sum is σ = 13339396224. Its totient is φ = 3108864000.

The previous prime is 6446269909. The next prime is 6446269957. The reversal of 6446269952 is 2599626446.

It is a junction number, because it is equal to n+sod(n) for n = 6446269894 and 6446269903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446269957) 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, 7316552 + ... + 7317432.

Almost surely, 2^6446269952 is an apocalyptic number.

6446269952 is a gapful number since it is divisible by the number (62) 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 6446269952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6669698112).

6446269952 is an abundant number, since it is smaller than the sum of its proper divisors (6893126272).

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

6446269952 is an equidigital number, since it uses as much as digits as its factorization.

6446269952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391 (or 1375 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 53.

The square root of 6446269952 is about 80288.6663981910. Note that the first 3 decimals coincide. The cubic root of 6446269952 is about 1861.0990875697.

The spelling of 6446269952 in words is "six billion, four hundred forty-six million, two hundred sixty-nine thousand, nine hundred fifty-two".