641641052604442 has 32 divisors (see below), whose sum is σ = 1054720293479424. Its totient is φ = 290334001892400.

The previous prime is 641641052604403. The next prime is 641641052604443. The reversal of 641641052604442 is 244406250146146.

It is not an unprimeable number, because it can be changed into a prime (641641052604443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38256628 + ... + 52410415.

It is an arithmetic number, because the mean of its divisors is an integer number (32960009171232).

Almost surely, 2^{641641052604442} is an apocalyptic number.

641641052604442 is a deficient number, since it is larger than the sum of its proper divisors (413079240874982).

641641052604442 is a wasteful number, since it uses less digits than its factorization.

641641052604442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90668514.

The product of its (nonzero) digits is 4423680, while the sum is 49.

The spelling of 641641052604442 in words is "six hundred forty-one trillion, six hundred forty-one billion, fifty-two million, six hundred four thousand, four hundred forty-two".