671734173384 has 24 divisors (see below), whose sum is σ = 1819280053110. Its totient is φ = 223911391104.

The previous prime is 671734173371. The next prime is 671734173403. The reversal of 671734173384 is 483371437176.

671734173384 is a `hidden beast` number, since 67 + 1 + 7 + 34 + 173 + 384 = 666.

It can be written as a sum of positive squares in only one way, i.e., 638365844484 + 33368328900 = 798978^2 + 182670^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×671734173384² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671734173384.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4664820577 + ... + 4664820720.

Almost surely, 2^671734173384 is an apocalyptic number.

It is an amenable number.

671734173384 is an abundant number, since it is smaller than the sum of its proper divisors (1147545879726).

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

671734173384 is a wasteful number, since it uses less digits than its factorization.

671734173384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329641309 (or 9329641302 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 671734173384 in words is "six hundred seventy-one billion, seven hundred thirty-four million, one hundred seventy-three thousand, three hundred eighty-four".