1040956890109 has 4 divisors (see below), whose sum is σ = 1040971829020. Its totient is φ = 1040941951200.

The previous prime is 1040956890053. The next prime is 1040956890121. The reversal of 1040956890109 is 9010986590401.

It is a happy number.

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 150675948900 + 890280941209 = 388170^2 + 943547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040956890109 - 2¹¹ = 1040956888061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040926890109) 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, 7364442 + ... + 7504459.

It is an arithmetic number, because the mean of its divisors is an integer number (260242957255).

Almost surely, 2^{1040956890109} is an apocalyptic number.

It is an amenable number.

1040956890109 is a deficient number, since it is larger than the sum of its proper divisors (14938911).

1040956890109 is an equidigital number, since it uses as much as digits as its factorization.

1040956890109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938910.

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 1040956890109 in words is "one trillion, forty billion, nine hundred fifty-six million, eight hundred ninety thousand, one hundred nine".