1601656005650 has 12 divisors (see below), whose sum is σ = 2979080170602. Its totient is φ = 640662402240.

The previous prime is 1601656005629. The next prime is 1601656005659. The reversal of 1601656005650 is 565006561061.

It can be written as a sum of positive squares in 3 ways, for example, as 1252454195161 + 349201810489 = 1119131^2 + 590933^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1601656005598 and 1601656005607.

It is not an unprimeable number, because it can be changed into a prime (1601656005659) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 16016560007 + ... + 16016560106.

Almost surely, 2^{1601656005650} is an apocalyptic number.

1601656005650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1601656005650 is a deficient number, since it is larger than the sum of its proper divisors (1377424164952).

1601656005650 is a wasteful number, since it uses less digits than its factorization.

1601656005650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32033120125 (or 32033120120 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 1601656005650 in words is "one trillion, six hundred one billion, six hundred fifty-six million, five thousand, six hundred fifty".