641292670212 has 12 divisors (see below), whose sum is σ = 1496349563856. Its totient is φ = 213764223400.

The previous prime is 641292670189. The next prime is 641292670217. The reversal of 641292670212 is 212076292146.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×641292670212² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641292670217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26720527914 + ... + 26720527937.

It is an arithmetic number, because the mean of its divisors is an integer number (124695796988).

Almost surely, 2^641292670212 is an apocalyptic number.

It is an amenable number.

641292670212 is an abundant number, since it is smaller than the sum of its proper divisors (855056893644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641292670212 is a wasteful number, since it uses less digits than its factorization.

641292670212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53441055858 (or 53441055856 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 641292670212 in words is "six hundred forty-one billion, two hundred ninety-two million, six hundred seventy thousand, two hundred twelve".