671510820875 has 8 divisors (see below), whose sum is σ = 838045504608. Its totient is φ = 537208656600.

The previous prime is 671510820853. The next prime is 671510820907. The reversal of 671510820875 is 578028015176.

It is not a de Polignac number, because 671510820875 - 2³⁰ = 670437079051 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 2686043159 + ... + 2686043408.

It is an arithmetic number, because the mean of its divisors is an integer number (104755688076).

Almost surely, 2^671510820875 is an apocalyptic number.

671510820875 is a deficient number, since it is larger than the sum of its proper divisors (166534683733).

671510820875 is an equidigital number, since it uses as much as digits as its factorization.

671510820875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372086582 (or 5372086572 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 50.

The spelling of 671510820875 in words is "six hundred seventy-one billion, five hundred ten million, eight hundred twenty thousand, eight hundred seventy-five".