1155736855057 has 2 divisors, whose sum is σ = 1155736855058. Its totient is φ = 1155736855056.

The previous prime is 1155736855001. The next prime is 1155736855093. The reversal of 1155736855057 is 7505586375511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 746013965841 + 409722889216 = 863721^2 + 640096^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155736855057 - 2¹⁹ = 1155736330769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155736854992 and 1155736855010.

It is not a weakly prime, because it can be changed into another prime (1155736852057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577868427528 + 577868427529.

It is an arithmetic number, because the mean of its divisors is an integer number (577868427529).

Almost surely, 2^{1155736855057} is an apocalyptic number.

It is an amenable number.

1155736855057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155736855057 is an equidigital number, since it uses as much as digits as its factorization.

1155736855057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22050000, while the sum is 58.

The spelling of 1155736855057 in words is "one trillion, one hundred fifty-five billion, seven hundred thirty-six million, eight hundred fifty-five thousand, fifty-seven".