641542656414 has 64 divisors (see below), whose sum is σ = 1472538528000. Its totient is φ = 184521738240.

The previous prime is 641542656413. The next prime is 641542656421. The reversal of 641542656414 is 414656245146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641542656413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2727619 + ... + 2953470.

It is an arithmetic number, because the mean of its divisors is an integer number (23008414500).

Almost surely, 2^641542656414 is an apocalyptic number.

641542656414 is an abundant number, since it is smaller than the sum of its proper divisors (830995871586).

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

641542656414 is a wasteful number, since it uses less digits than its factorization.

641542656414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681193.

The product of its digits is 2764800, while the sum is 48.

The spelling of 641542656414 in words is "six hundred forty-one billion, five hundred forty-two million, six hundred fifty-six thousand, four hundred fourteen".