1235791345553 has 2 divisors, whose sum is σ = 1235791345554. Its totient is φ = 1235791345552.

The previous prime is 1235791345541. The next prime is 1235791345597. The reversal of 1235791345553 is 3555431975321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713455583569 + 522335761984 = 844663^2 + 722728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235791345553 - 2⁸ = 1235791345297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1235791345495 and 1235791345504.

It is not a weakly prime, because it can be changed into another prime (1235791345153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617895672776 + 617895672777.

It is an arithmetic number, because the mean of its divisors is an integer number (617895672777).

Almost surely, 2^{1235791345553} is an apocalyptic number.

It is an amenable number.

1235791345553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235791345553 is an equidigital number, since it uses as much as digits as its factorization.

1235791345553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505000, while the sum is 53.

The spelling of 1235791345553 in words is "one trillion, two hundred thirty-five billion, seven hundred ninety-one million, three hundred forty-five thousand, five hundred fifty-three".