6400561126 has 8 divisors (see below), whose sum is σ = 9649577520. Its totient is φ = 3184035288.

The previous prime is 6400561117. The next prime is 6400561129. The reversal of 6400561126 is 6211650046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400561129) 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 3 ways as a sum of consecutive naturals, for example, 8122146 + ... + 8122933.

It is an arithmetic number, because the mean of its divisors is an integer number (1206197190).

Almost surely, 2^6400561126 is an apocalyptic number.

6400561126 is a deficient number, since it is larger than the sum of its proper divisors (3249016394).

6400561126 is a wasteful number, since it uses less digits than its factorization.

6400561126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245278.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 6400561126 is about 80003.5069606327. The cubic root of 6400561126 is about 1856.6897926131.

The spelling of 6400561126 in words is "six billion, four hundred million, five hundred sixty-one thousand, one hundred twenty-six".