1040534511649 has 4 divisors (see below), whose sum is σ = 1042851960900. Its totient is φ = 1038217062400.

The previous prime is 1040534511619. The next prime is 1040534511671. The reversal of 1040534511649 is 9461154350401.

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 305173380625 + 735361131024 = 552425^2 + 857532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040534511649 - 2³⁷ = 903095558177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040534511619) 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, 1158723952 + ... + 1158724849.

It is an arithmetic number, because the mean of its divisors is an integer number (260712990225).

Almost surely, 2^{1040534511649} is an apocalyptic number.

It is an amenable number.

1040534511649 is a deficient number, since it is larger than the sum of its proper divisors (2317449251).

1040534511649 is an equidigital number, since it uses as much as digits as its factorization.

1040534511649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317449250.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 1040534511649 in words is "one trillion, forty billion, five hundred thirty-four million, five hundred eleven thousand, six hundred forty-nine".