674945472128 has 16 divisors (see below), whose sum is σ = 1344617933010. Its totient is φ = 337472736000.

The previous prime is 674945472101. The next prime is 674945472143. The reversal of 674945472128 is 821274549476.

It can be written as a sum of positive squares in only one way, i.e., 522914104384 + 152031367744 = 723128^2 + 389912^2 .

It is a tau number, because it is divible by the number of its divisors (16).

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, 2636505623 + ... + 2636505878.

Almost surely, 2^674945472128 is an apocalyptic number.

It is an amenable number.

674945472128 is a deficient number, since it is larger than the sum of its proper divisors (669672460882).

674945472128 is an equidigital number, since it uses as much as digits as its factorization.

674945472128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273011515 (or 5273011503 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 59.

The spelling of 674945472128 in words is "six hundred seventy-four billion, nine hundred forty-five million, four hundred seventy-two thousand, one hundred twenty-eight".