641530012 has 6 divisors (see below), whose sum is σ = 1122677528. Its totient is φ = 320765004.

The previous prime is 641530009. The next prime is 641530049. The reversal of 641530012 is 210035146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80191248 + ... + 80191255.

Almost surely, 2^641530012 is an apocalyptic number.

It is an amenable number.

641530012 is a deficient number, since it is larger than the sum of its proper divisors (481147516).

641530012 is a wasteful number, since it uses less digits than its factorization.

641530012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160382507 (or 160382505 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 641530012 is about 25328.4427472358. The cubic root of 641530012 is about 862.4600609385.

Adding to 641530012 its reverse (210035146), we get a palindrome (851565158).

The spelling of 641530012 in words is "six hundred forty-one million, five hundred thirty thousand, twelve".