6400632032 has 12 divisors (see below), whose sum is σ = 12601244376. Its totient is φ = 3200316000.

The previous prime is 6400632023. The next prime is 6400632071. The reversal of 6400632032 is 2302360046.

It is a junction number, because it is equal to n+sod(n) for n = 6400631992 and 6400632010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100009844 + ... + 100009907.

It is an arithmetic number, because the mean of its divisors is an integer number (1050103698).

Almost surely, 2^6400632032 is an apocalyptic number.

It is an amenable number.

6400632032 is a deficient number, since it is larger than the sum of its proper divisors (6200612344).

6400632032 is a wasteful number, since it uses less digits than its factorization.

6400632032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200019761 (or 200019753 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 6400632032 is about 80003.9501024793. The cubic root of 6400632032 is about 1856.6966487807.

Adding to 6400632032 its reverse (2302360046), we get a palindrome (8702992078).

The spelling of 6400632032 in words is "six billion, four hundred million, six hundred thirty-two thousand, thirty-two".