641361000444 has 24 divisors (see below), whose sum is σ = 1506419660928. Its totient is φ = 212371191600.

The previous prime is 641361000419. The next prime is 641361000479. The reversal of 641361000444 is 444000163146.

641361000444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641361000444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176974182 + ... + 176977805.

It is an arithmetic number, because the mean of its divisors is an integer number (62767485872).

Almost surely, 2^641361000444 is an apocalyptic number.

It is an amenable number.

641361000444 is an abundant number, since it is smaller than the sum of its proper divisors (865058660484).

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

641361000444 is a wasteful number, since it uses less digits than its factorization.

641361000444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353952145 (or 353952143 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 641361000444 in words is "six hundred forty-one billion, three hundred sixty-one million, four hundred forty-four", and thus it is an aban number.