1133158618261 has 4 divisors (see below), whose sum is σ = 1133160896812. Its totient is φ = 1133156339712.

The previous prime is 1133158618247. The next prime is 1133158618303. The reversal of 1133158618261 is 1628168513311.

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 356028215761 + 777130402500 = 596681^2 + 881550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133158618261 - 2⁷ = 1133158618133 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 (1133158613261) 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, 39276 + ... + 1505941.

It is an arithmetic number, because the mean of its divisors is an integer number (283290224203).

Almost surely, 2^{1133158618261} is an apocalyptic number.

It is an amenable number.

1133158618261 is a deficient number, since it is larger than the sum of its proper divisors (2278551).

1133158618261 is an equidigital number, since it uses as much as digits as its factorization.

1133158618261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278550.

The product of its digits is 207360, while the sum is 46.

The spelling of 1133158618261 in words is "one trillion, one hundred thirty-three billion, one hundred fifty-eight million, six hundred eighteen thousand, two hundred sixty-one".