671038681788 has 36 divisors (see below), whose sum is σ = 1696401955248. Its totient is φ = 223657764480.

The previous prime is 671038681763. The next prime is 671038681813. The reversal of 671038681788 is 887186830176.

671038681788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (671038681763) and next prime (671038681813).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 531456 + ... + 1274567.

Almost surely, 2^671038681788 is an apocalyptic number.

It is an amenable number.

671038681788 is an abundant number, since it is smaller than the sum of its proper divisors (1025363273460).

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

671038681788 is a wasteful number, since it uses less digits than its factorization.

671038681788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816354 (or 1816349 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The spelling of 671038681788 in words is "six hundred seventy-one billion, thirty-eight million, six hundred eighty-one thousand, seven hundred eighty-eight".