673312437128 has 8 divisors (see below), whose sum is σ = 1262460819630. Its totient is φ = 336656218560.

The previous prime is 673312437103. The next prime is 673312437137. The reversal of 673312437128 is 821734213376.

It can be written as a sum of positive squares in only one way, i.e., 522847578724 + 150464858404 = 723082^2 + 387898^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42082027313 + ... + 42082027328.

Almost surely, 2^673312437128 is an apocalyptic number.

It is an amenable number.

673312437128 is a deficient number, since it is larger than the sum of its proper divisors (589148382502).

673312437128 is a wasteful number, since it uses less digits than its factorization.

673312437128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84164054647 (or 84164054643 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The spelling of 673312437128 in words is "six hundred seventy-three billion, three hundred twelve million, four hundred thirty-seven thousand, one hundred twenty-eight".