641548340434 has 8 divisors (see below), whose sum is σ = 968451953868. Its totient is φ = 318731022480.

The previous prime is 641548340401. The next prime is 641548340437. The reversal of 641548340434 is 434043845146.

641548340434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 506011709025 + 135536631409 = 711345^2 + 368153^2 .

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

It is a super-2 number, since 2×641548340434² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641548340437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021573477 + ... + 1021574104.

Almost surely, 2^641548340434 is an apocalyptic number.

641548340434 is a deficient number, since it is larger than the sum of its proper divisors (326903613434).

641548340434 is a wasteful number, since it uses less digits than its factorization.

641548340434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043147740.

The product of its (nonzero) digits is 2211840, while the sum is 46.

The spelling of 641548340434 in words is "six hundred forty-one billion, five hundred forty-eight million, three hundred forty thousand, four hundred thirty-four".