641292473044 has 12 divisors (see below), whose sum is σ = 1122284558304. Its totient is φ = 320639742104.

The previous prime is 641292472987. The next prime is 641292473053. The reversal of 641292473044 is 440374292146.

It is a super-3 number, since 3×641292473044³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 641292472985 and 641292473003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397944 + ... + 1799119.

It is an arithmetic number, because the mean of its divisors is an integer number (93523713192).

Almost surely, 2^641292473044 is an apocalyptic number.

It is an amenable number.

641292473044 is a deficient number, since it is larger than the sum of its proper divisors (480992085260).

641292473044 is a wasteful number, since it uses less digits than its factorization.

641292473044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247214 (or 3247212 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 641292473044 in words is "six hundred forty-one billion, two hundred ninety-two million, four hundred seventy-three thousand, forty-four".