6404635102265 has 16 divisors (see below), whose sum is σ = 7950657200400. Its totient is φ = 4946981394432.

The previous prime is 6404635102249. The next prime is 6404635102289. The reversal of 6404635102265 is 5622015364046.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 389309858809 + 6015325243456 = 623947^2 + 2452616^2 .

It is a cyclic number.

It is not a de Polignac number, because 6404635102265 - 2⁴ = 6404635102249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29464901 + ... + 29681469.

It is an arithmetic number, because the mean of its divisors is an integer number (496916075025).

Almost surely, 2^{6404635102265} is an apocalyptic number.

It is an amenable number.

6404635102265 is a deficient number, since it is larger than the sum of its proper divisors (1546022098135).

6404635102265 is a wasteful number, since it uses less digits than its factorization.

6404635102265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420556.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 6404635102265 in words is "six trillion, four hundred four billion, six hundred thirty-five million, one hundred two thousand, two hundred sixty-five".