671788846431 has 12 divisors (see below), whose sum is σ = 974137396752. Its totient is φ = 446116586496.

The previous prime is 671788846411. The next prime is 671788846459. The reversal of 671788846431 is 134648887176.

671788846431 is a `hidden beast` number, since 6 + 71 + 78 + 8 + 8 + 464 + 31 = 666.

It is not a de Polignac number, because 671788846431 - 2²¹ = 671786749279 is a prime.

It is a super-2 number, since 2×671788846431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671788846411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145217931 + ... + 145222556.

It is an arithmetic number, because the mean of its divisors is an integer number (81178116396).

Almost surely, 2^671788846431 is an apocalyptic number.

671788846431 is a deficient number, since it is larger than the sum of its proper divisors (302348550321).

671788846431 is a wasteful number, since it uses less digits than its factorization.

671788846431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290440750 (or 290440747 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 671788846431 in words is "six hundred seventy-one billion, seven hundred eighty-eight million, eight hundred forty-six thousand, four hundred thirty-one".