671052056650 has 12 divisors (see below), whose sum is σ = 1248156825462. Its totient is φ = 268420822640.

The previous prime is 671052056641. The next prime is 671052056663. The reversal of 671052056650 is 56650250176.

It can be written as a sum of positive squares in 3 ways, for example, as 402528071401 + 268523985249 = 634451^2 + 518193^2 .

It is a junction number, because it is equal to n+sod(n) for n = 671052056597 and 671052056606.

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, 6710520517 + ... + 6710520616.

Almost surely, 2^671052056650 is an apocalyptic number.

671052056650 is a deficient number, since it is larger than the sum of its proper divisors (577104768812).

671052056650 is a wasteful number, since it uses less digits than its factorization.

671052056650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13421041145 (or 13421041140 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 671052056650 in words is "six hundred seventy-one billion, fifty-two million, fifty-six thousand, six hundred fifty".