671346646719 has 16 divisors (see below), whose sum is σ = 1030471603968. Its totient is φ = 380826459072.

The previous prime is 671346646717. The next prime is 671346646771. The reversal of 671346646719 is 917646643176.

It is not a de Polignac number, because 671346646719 - 2¹ = 671346646717 is a prime.

It is a super-2 number, since 2×671346646719² (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 (671346646717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116671897 + ... + 116677650.

It is an arithmetic number, because the mean of its divisors is an integer number (64404475248).

Almost surely, 2^671346646719 is an apocalyptic number.

671346646719 is a deficient number, since it is larger than the sum of its proper divisors (359124957249).

671346646719 is a wasteful number, since it uses less digits than its factorization.

671346646719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233349694.

The product of its digits is 27433728, while the sum is 60.

The spelling of 671346646719 in words is "six hundred seventy-one billion, three hundred forty-six million, six hundred forty-six thousand, seven hundred nineteen".