1606262162721 has 16 divisors (see below), whose sum is σ = 2178123549120. Its totient is φ = 1052623458560.

The previous prime is 1606262162717. The next prime is 1606262162723. The reversal of 1606262162721 is 1272612626061.

It is a cyclic number.

It is not a de Polignac number, because 1606262162721 - 2² = 1606262162717 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1606262162723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2525221 + ... + 3096653.

It is an arithmetic number, because the mean of its divisors is an integer number (136132721820).

Almost surely, 2^{1606262162721} is an apocalyptic number.

It is an amenable number.

1606262162721 is a deficient number, since it is larger than the sum of its proper divisors (571861386399).

1606262162721 is a wasteful number, since it uses less digits than its factorization.

1606262162721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587376.

The product of its (nonzero) digits is 145152, while the sum is 42.

Adding to 1606262162721 its reverse (1272612626061), we get a palindrome (2878874788782).

The spelling of 1606262162721 in words is "one trillion, six hundred six billion, two hundred sixty-two million, one hundred sixty-two thousand, seven hundred twenty-one".