671550651807 has 24 divisors (see below), whose sum is σ = 1044916597296. Its totient is φ = 382517186688.

The previous prime is 671550651791. The next prime is 671550651839. The reversal of 671550651807 is 708156055176.

It is not a de Polignac number, because 671550651807 - 2⁴ = 671550651791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671550651807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671550651307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7251708 + ... + 7343729.

It is an arithmetic number, because the mean of its divisors is an integer number (43538191554).

Almost surely, 2^671550651807 is an apocalyptic number.

671550651807 is a deficient number, since it is larger than the sum of its proper divisors (373365945489).

671550651807 is a wasteful number, since it uses less digits than its factorization.

671550651807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595767 (or 14595760 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 51.

The spelling of 671550651807 in words is "six hundred seventy-one billion, five hundred fifty million, six hundred fifty-one thousand, eight hundred seven".