6402544332 has 24 divisors (see below), whose sum is σ = 15010078272. Its totient is φ = 2124066000.

The previous prime is 6402544331. The next prime is 6402544349. The reversal of 6402544332 is 2334452046.

It is a junction number, because it is equal to n+sod(n) for n = 6402544293 and 6402544302.

It is not an unprimeable number, because it can be changed into a prime (6402544331) 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 7 ways as a sum of consecutive naturals, for example, 1261794 + ... + 1266857.

It is an arithmetic number, because the mean of its divisors is an integer number (625419928).

Almost surely, 2^6402544332 is an apocalyptic number.

It is an amenable number.

6402544332 is an abundant number, since it is smaller than the sum of its proper divisors (8607533940).

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

6402544332 is a wasteful number, since it uses less digits than its factorization.

6402544332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528869 (or 2528867 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

The square root of 6402544332 is about 80015.9004948391. The cubic root of 6402544332 is about 1856.8815371607.

Adding to 6402544332 its reverse (2334452046), we get a palindrome (8736996378).

The spelling of 6402544332 in words is "six billion, four hundred two million, five hundred forty-four thousand, three hundred thirty-two".