6440303152 has 10 divisors (see below), whose sum is σ = 12478087388. Its totient is φ = 3220151568.

The previous prime is 6440303141. The next prime is 6440303153. The reversal of 6440303152 is 2513030446.

It is a super-2 number, since 2×6440303152² = 82955009379322270208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6440303152.

It is not an unprimeable number, because it can be changed into a prime (6440303153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201259458 + ... + 201259489.

Almost surely, 2^6440303152 is an apocalyptic number.

It is an amenable number.

6440303152 is a deficient number, since it is larger than the sum of its proper divisors (6037784236).

6440303152 is a wasteful number, since it uses less digits than its factorization.

6440303152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402518955 (or 402518949 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 6440303152 is about 80251.4993754011. The cubic root of 6440303152 is about 1860.5246864478.

Adding to 6440303152 its reverse (2513030446), we get a palindrome (8953333598).

The spelling of 6440303152 in words is "six billion, four hundred forty million, three hundred three thousand, one hundred fifty-two".