1065155511257 has 2 divisors, whose sum is σ = 1065155511258. Its totient is φ = 1065155511256.

The previous prime is 1065155511149. The next prime is 1065155511307. The reversal of 1065155511257 is 7521155515601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618638879296 + 446516631961 = 786536^2 + 668219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065155511257 - 2⁸ = 1065155511001 is a prime.

It is a super-2 number, since 2×1065155511257² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065155511457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532577755628 + 532577755629.

It is an arithmetic number, because the mean of its divisors is an integer number (532577755629).

Almost surely, 2^{1065155511257} is an apocalyptic number.

It is an amenable number.

1065155511257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065155511257 is an equidigital number, since it uses as much as digits as its factorization.

1065155511257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262500, while the sum is 44.

The spelling of 1065155511257 in words is "one trillion, sixty-five billion, one hundred fifty-five million, five hundred eleven thousand, two hundred fifty-seven".