641412662172 has 96 divisors (see below), whose sum is σ = 1564541384448. Its totient is φ = 204327028224.

The previous prime is 641412662159. The next prime is 641412662213. The reversal of 641412662172 is 271266214146.

It is a super-2 number, since 2×641412662172² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10291488 + ... + 10353624.

It is an arithmetic number, because the mean of its divisors is an integer number (16297306088).

Almost surely, 2^641412662172 is an apocalyptic number.

It is an amenable number.

641412662172 is an abundant number, since it is smaller than the sum of its proper divisors (923128722276).

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

641412662172 is a wasteful number, since it uses less digits than its factorization.

641412662172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62595 (or 62593 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The spelling of 641412662172 in words is "six hundred forty-one billion, four hundred twelve million, six hundred sixty-two thousand, one hundred seventy-two".