641626451212 has 6 divisors (see below), whose sum is σ = 1122846289628. Its totient is φ = 320813225604.

The previous prime is 641626451153. The next prime is 641626451287. The reversal of 641626451212 is 212154626146.

641626451212 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 as a sum of consecutive naturals, namely, 80203306398 + ... + 80203306405.

Almost surely, 2^641626451212 is an apocalyptic number.

It is an amenable number.

641626451212 is a deficient number, since it is larger than the sum of its proper divisors (481219838416).

641626451212 is a wasteful number, since it uses less digits than its factorization.

641626451212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160406612807 (or 160406612805 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The spelling of 641626451212 in words is "six hundred forty-one billion, six hundred twenty-six million, four hundred fifty-one thousand, two hundred twelve".