1145251440243 has 32 divisors (see below), whose sum is σ = 1798645720320. Its totient is φ = 717719990400.

The previous prime is 1145251440241. The next prime is 1145251440247. The reversal of 1145251440243 is 3420441525411.

1145251440243 is a `hidden beast` number, since 1 + 14 + 52 + 514 + 40 + 2 + 43 = 666.

It is not a de Polignac number, because 1145251440243 - 2¹ = 1145251440241 is a prime.

It is a super-2 number, since 2×1145251440243² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145251440198 and 1145251440207.

It is not an unprimeable number, because it can be changed into a prime (1145251440241) 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 31 ways as a sum of consecutive naturals, for example, 1128933 + ... + 1888118.

It is an arithmetic number, because the mean of its divisors is an integer number (56207678760).

Almost surely, 2^{1145251440243} is an apocalyptic number.

1145251440243 is a deficient number, since it is larger than the sum of its proper divisors (653394280077).

1145251440243 is a wasteful number, since it uses less digits than its factorization.

1145251440243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017904 (or 3017898 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 1145251440243 its reverse (3420441525411), we get a palindrome (4565692965654).

The spelling of 1145251440243 in words is "one trillion, one hundred forty-five billion, two hundred fifty-one million, four hundred forty thousand, two hundred forty-three".