6401071065 has 32 divisors (see below), whose sum is σ = 10391262336. Its totient is φ = 3364139520.

The previous prime is 6401071043. The next prime is 6401071073. The reversal of 6401071065 is 5601701046.

It is not a de Polignac number, because 6401071065 - 2⁹ = 6401070553 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1790730 + ... + 1794300.

It is an arithmetic number, because the mean of its divisors is an integer number (324726948).

Almost surely, 2^6401071065 is an apocalyptic number.

It is an amenable number.

6401071065 is a deficient number, since it is larger than the sum of its proper divisors (3990191271).

6401071065 is a wasteful number, since it uses less digits than its factorization.

6401071065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6401071065 is about 80006.6938762001. The cubic root of 6401071065 is about 1856.7390994043.

The spelling of 6401071065 in words is "six billion, four hundred one million, seventy-one thousand, sixty-five".