671534431732 has 24 divisors (see below), whose sum is σ = 1277943907464. Its totient is φ = 307475223552.

The previous prime is 671534431723. The next prime is 671534431741. The reversal of 671534431732 is 237134435176.

It is an interprime number because it is at equal distance from previous prime (671534431723) and next prime (671534431741).

It can be written as a sum of positive squares in 4 ways, for example, as 278864261776 + 392670169956 = 528076^2 + 626634^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133450273 + ... + 133455304.

It is an arithmetic number, because the mean of its divisors is an integer number (53247662811).

Almost surely, 2^671534431732 is an apocalyptic number.

It is an amenable number.

671534431732 is a deficient number, since it is larger than the sum of its proper divisors (606409475732).

671534431732 is a wasteful number, since it uses less digits than its factorization.

671534431732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266905635 (or 266905633 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 46.

The spelling of 671534431732 in words is "six hundred seventy-one billion, five hundred thirty-four million, four hundred thirty-one thousand, seven hundred thirty-two".