6404431565105 has 8 divisors (see below), whose sum is σ = 8783220432192. Its totient is φ = 4391610216048.

The previous prime is 6404431565093. The next prime is 6404431565113. The reversal of 6404431565105 is 5015651344046.

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

It is a cyclic number.

It is not a de Polignac number, because 6404431565105 - 2²⁰ = 6404430516529 is a prime.

It is a super-2 number, since 2×6404431565105² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

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, 91491879467 + ... + 91491879536.

It is an arithmetic number, because the mean of its divisors is an integer number (1097902554024).

Almost surely, 2^{6404431565105} is an apocalyptic number.

It is an amenable number.

6404431565105 is a deficient number, since it is larger than the sum of its proper divisors (2378788867087).

6404431565105 is a wasteful number, since it uses less digits than its factorization.

6404431565105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182983759015.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 6404431565105 in words is "six trillion, four hundred four billion, four hundred thirty-one million, five hundred sixty-five thousand, one hundred five".