1040503144861 has 4 divisors (see below), whose sum is σ = 1040748492924. Its totient is φ = 1040257796800.

The previous prime is 1040503144843. The next prime is 1040503144873. The reversal of 1040503144861 is 1684413050401.

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 488314452025 + 552188692836 = 698795^2 + 743094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040503144861 - 2¹⁵ = 1040503112093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040503144861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040503174861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122667670 + ... + 122676151.

It is an arithmetic number, because the mean of its divisors is an integer number (260187123231).

Almost surely, 2^{1040503144861} is an apocalyptic number.

It is an amenable number.

1040503144861 is a deficient number, since it is larger than the sum of its proper divisors (245348063).

1040503144861 is an equidigital number, since it uses as much as digits as its factorization.

1040503144861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245348062.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 1040503144861 in words is "one trillion, forty billion, five hundred three million, one hundred forty-four thousand, eight hundred sixty-one".