1145136228557 has 4 divisors (see below), whose sum is σ = 1212497183196. Its totient is φ = 1077775273920.

The previous prime is 1145136228527. The next prime is 1145136228559. The reversal of 1145136228557 is 7558226315411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 467553720841 + 677582507716 = 683779^2 + 823154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145136228557 - 2⁶ = 1145136228493 is a prime.

It is a super-2 number, since 2×1145136228557² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145136228559) 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 in 3 ways as a sum of consecutive naturals, for example, 33680477294 + ... + 33680477327.

It is an arithmetic number, because the mean of its divisors is an integer number (303124295799).

Almost surely, 2^{1145136228557} is an apocalyptic number.

1145136228557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1145136228557 is a deficient number, since it is larger than the sum of its proper divisors (67360954639).

1145136228557 is an equidigital number, since it uses as much as digits as its factorization.

1145136228557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67360954638.

The product of its digits is 2016000, while the sum is 50.

The spelling of 1145136228557 in words is "one trillion, one hundred forty-five billion, one hundred thirty-six million, two hundred twenty-eight thousand, five hundred fifty-seven".