1601500666653 has 12 divisors (see below), whose sum is σ = 2313297254268. Its totient is φ = 1067658566400.

The previous prime is 1601500666631. The next prime is 1601500666729. The reversal of 1601500666653 is 3566660051061.

It can be written as a sum of positive squares in 2 ways, for example, as 313087249764 + 1288413416889 = 559542^2 + 1135083^2 .

It is not a de Polignac number, because 1601500666653 - 2⁵ = 1601500666621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1601500666599 and 1601500666608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601500666603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 602751 + ... + 1888467.

It is an arithmetic number, because the mean of its divisors is an integer number (192774771189).

Almost surely, 2^{1601500666653} is an apocalyptic number.

It is an amenable number.

1601500666653 is a deficient number, since it is larger than the sum of its proper divisors (711796587615).

1601500666653 is a wasteful number, since it uses less digits than its factorization.

1601500666653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424124 (or 1424121 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 1601500666653 in words is "one trillion, six hundred one billion, five hundred million, six hundred sixty-six thousand, six hundred fifty-three".