1656523401053 has 2 divisors, whose sum is σ = 1656523401054. Its totient is φ = 1656523401052.

The previous prime is 1656523401019. The next prime is 1656523401061. The reversal of 1656523401053 is 3501043256561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925794201124 + 730729199929 = 962182^2 + 854827^2 .

It is an emirp because it is prime and its reverse (3501043256561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1656523401053 - 2³⁸ = 1381645494109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1656523401053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656523401853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828261700526 + 828261700527.

It is an arithmetic number, because the mean of its divisors is an integer number (828261700527).

Almost surely, 2^{1656523401053} is an apocalyptic number.

It is an amenable number.

1656523401053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656523401053 is an equidigital number, since it uses as much as digits as its factorization.

1656523401053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 1656523401053 in words is "one trillion, six hundred fifty-six billion, five hundred twenty-three million, four hundred one thousand, fifty-three".