6506669410638 has 32 divisors (see below), whose sum is σ = 13331715802272. Its totient is φ = 2115834739200.

The previous prime is 6506669410627. The next prime is 6506669410639. The reversal of 6506669410638 is 8360149666056.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506669410639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2411520 + ... + 4339212.

It is an arithmetic number, because the mean of its divisors is an integer number (416616118821).

Almost surely, 2^{6506669410638} is an apocalyptic number.

6506669410638 is an abundant number, since it is smaller than the sum of its proper divisors (6825046391634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6506669410638 is a wasteful number, since it uses less digits than its factorization.

6506669410638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941460.

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 6506669410638 in words is "six trillion, five hundred six billion, six hundred sixty-nine million, four hundred ten thousand, six hundred thirty-eight".