671500442125 has 8 divisors (see below), whose sum is σ = 838032551928. Its totient is φ = 537200353600.

The previous prime is 671500442101. The next prime is 671500442141. The reversal of 671500442125 is 521244005176.

It can be written as a sum of positive squares in 4 ways, for example, as 167028333481 + 504472108644 = 408691^2 + 710262^2 .

It is not a de Polignac number, because 671500442125 - 2¹⁵ = 671500409357 is a prime.

It is a Duffinian number.

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, 2686001644 + ... + 2686001893.

It is an arithmetic number, because the mean of its divisors is an integer number (104754068991).

Almost surely, 2^671500442125 is an apocalyptic number.

It is an amenable number.

671500442125 is a deficient number, since it is larger than the sum of its proper divisors (166532109803).

671500442125 is an equidigital number, since it uses as much as digits as its factorization.

671500442125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372003552 (or 5372003542 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 671500442125 in words is "six hundred seventy-one billion, five hundred million, four hundred forty-two thousand, one hundred twenty-five".