641888888146 has 64 divisors (see below), whose sum is σ = 1108631494656. Its totient is φ = 276075763200.

The previous prime is 641888888119. The next prime is 641888888171.

It is a happy number.

641888888146 is nontrivially palindromic in base 10.

641888888146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5432331 + ... + 5549233.

It is an arithmetic number, because the mean of its divisors is an integer number (17322367104).

Almost surely, 2^641888888146 is an apocalyptic number.

641888888146 is a deficient number, since it is larger than the sum of its proper divisors (466742606510).

641888888146 is a wasteful number, since it uses less digits than its factorization.

641888888146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117127.

The product of its digits is 150994944, while the sum is 70.

The spelling of 641888888146 in words is "six hundred forty-one billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, one hundred forty-six".