1145771432557 has 2 divisors, whose sum is σ = 1145771432558. Its totient is φ = 1145771432556.

The previous prime is 1145771432539. The next prime is 1145771432587. The reversal of 1145771432557 is 7552341775411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1132545052521 + 13226380036 = 1064211^2 + 115006^2 .

It is an emirp because it is prime and its reverse (7552341775411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145771432557 - 2²⁷ = 1145637214829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145771432527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572885716278 + 572885716279.

It is an arithmetic number, because the mean of its divisors is an integer number (572885716279).

Almost surely, 2^{1145771432557} is an apocalyptic number.

It is an amenable number.

1145771432557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145771432557 is an equidigital number, since it uses as much as digits as its factorization.

1145771432557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4116000, while the sum is 52.

The spelling of 1145771432557 in words is "one trillion, one hundred forty-five billion, seven hundred seventy-one million, four hundred thirty-two thousand, five hundred fifty-seven".