6400001152 has 64 divisors (see below), whose sum is σ = 13515971040. Its totient is φ = 3008204800.

The previous prime is 6400001143. The next prime is 6400001189. The reversal of 6400001152 is 2511000046.

It is a tau number, because it is divible by the number of its divisors (64).

6400001152 is a modest number, since divided by 1152 gives 640 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3156363 + ... + 3158389.

Almost surely, 2^6400001152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6400001152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6757985520).

6400001152 is an abundant number, since it is smaller than the sum of its proper divisors (7115969888).

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

6400001152 is a wasteful number, since it uses less digits than its factorization.

6400001152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509 (or 3497 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 6400001152 is about 80000.0071999997. The cubic root of 6400001152 is about 1856.6356448432.

Adding to 6400001152 its reverse (2511000046), we get a palindrome (8911001198).

The spelling of 6400001152 in words is "six billion, four hundred million, one thousand, one hundred fifty-two".