671287478223 has 32 divisors (see below), whose sum is σ = 952798429440. Its totient is φ = 418939384320.

The previous prime is 671287478221. The next prime is 671287478249. The reversal of 671287478223 is 322874782176.

It is not a de Polignac number, because 671287478223 - 2¹ = 671287478221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671287478221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8024908 + ... + 8108126.

It is an arithmetic number, because the mean of its divisors is an integer number (29774950920).

Almost surely, 2^671287478223 is an apocalyptic number.

671287478223 is a deficient number, since it is larger than the sum of its proper divisors (281510951217).

671287478223 is a wasteful number, since it uses less digits than its factorization.

671287478223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84087.

The product of its digits is 12644352, while the sum is 57.

The spelling of 671287478223 in words is "six hundred seventy-one billion, two hundred eighty-seven million, four hundred seventy-eight thousand, two hundred twenty-three".