641026352566 has 8 divisors (see below), whose sum is σ = 965010791520. Its totient is φ = 319356088728.

The previous prime is 641026352557. The next prime is 641026352579. The reversal of 641026352566 is 665253620146.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578543086 + ... + 578544193.

It is an arithmetic number, because the mean of its divisors is an integer number (120626348940).

Almost surely, 2^641026352566 is an apocalyptic number.

641026352566 is a deficient number, since it is larger than the sum of its proper divisors (323984438954).

641026352566 is a wasteful number, since it uses less digits than its factorization.

641026352566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157087558.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 641026352566 in words is "six hundred forty-one billion, twenty-six million, three hundred fifty-two thousand, five hundred sixty-six".