1145465047481 has 4 divisors (see below), whose sum is σ = 1145481971172. Its totient is φ = 1145448123792.

The previous prime is 1145465047457. The next prime is 1145465047499. The reversal of 1145465047481 is 1847405645411.

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 242670523456 + 902794524025 = 492616^2 + 950155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145465047481 - 2¹⁰ = 1145465046457 is a prime.

It is a super-2 number, since 2×1145465047481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145465047081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8359910 + ... + 8495823.

It is an arithmetic number, because the mean of its divisors is an integer number (286370492793).

Almost surely, 2^{1145465047481} is an apocalyptic number.

It is an amenable number.

1145465047481 is a deficient number, since it is larger than the sum of its proper divisors (16923691).

1145465047481 is an equidigital number, since it uses as much as digits as its factorization.

1145465047481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16923690.

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 1145465047481 in words is "one trillion, one hundred forty-five billion, four hundred sixty-five million, forty-seven thousand, four hundred eighty-one".