641768261006 has 4 divisors (see below), whose sum is σ = 962652391512. Its totient is φ = 320884130502.

The previous prime is 641768261003. The next prime is 641768261021. The reversal of 641768261006 is 600162867146.

641768261006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641768261003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160442065250 + ... + 160442065253.

It is an arithmetic number, because the mean of its divisors is an integer number (240663097878).

Almost surely, 2^641768261006 is an apocalyptic number.

641768261006 is a deficient number, since it is larger than the sum of its proper divisors (320884130506).

641768261006 is a wasteful number, since it uses less digits than its factorization.

641768261006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320884130505.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 641768261006 in words is "six hundred forty-one billion, seven hundred sixty-eight million, two hundred sixty-one thousand, six".