6401008805 has 8 divisors (see below), whose sum is σ = 7928991744. Its totient is φ = 4955619600.

The previous prime is 6401008771. The next prime is 6401008807. The reversal of 6401008805 is 5088001046.

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

It is not a de Polignac number, because 6401008805 - 2⁶ = 6401008741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401008807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20648261 + ... + 20648570.

It is an arithmetic number, because the mean of its divisors is an integer number (991123968).

Almost surely, 2^6401008805 is an apocalyptic number.

It is an amenable number.

6401008805 is a deficient number, since it is larger than the sum of its proper divisors (1527982939).

6401008805 is a wasteful number, since it uses less digits than its factorization.

6401008805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41296867.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 6401008805 is about 80006.3047828107. The cubic root of 6401008805 is about 1856.7330795289.

The spelling of 6401008805 in words is "six billion, four hundred one million, eight thousand, eight hundred five".