641871152 has 40 divisors (see below), whose sum is σ = 1385484240. Its totient is φ = 286030080.

The previous prime is 641871149. The next prime is 641871161. The reversal of 641871152 is 251178146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47174 + ... + 59237.

It is an arithmetic number, because the mean of its divisors is an integer number (34637106).

Almost surely, 2^641871152 is an apocalyptic number.

It is an amenable number.

641871152 is an abundant number, since it is smaller than the sum of its proper divisors (743613088).

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

641871152 is a wasteful number, since it uses less digits than its factorization.

641871152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106461 (or 106455 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 641871152 is about 25335.1761785862. The cubic root of 641871152 is about 862.6129077702.

The spelling of 641871152 in words is "six hundred forty-one million, eight hundred seventy-one thousand, one hundred fifty-two".