1241136455665 has 4 divisors (see below), whose sum is σ = 1489363746804. Its totient is φ = 992909164528.

The previous prime is 1241136455627. The next prime is 1241136455681. The reversal of 1241136455665 is 5665546311421.

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 495324586849 + 745811868816 = 703793^2 + 863604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241136455665 - 2²³ = 1241128067057 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124113645562 + ... + 124113645571.

It is an arithmetic number, because the mean of its divisors is an integer number (372340936701).

Almost surely, 2^{1241136455665} is an apocalyptic number.

It is an amenable number.

1241136455665 is a deficient number, since it is larger than the sum of its proper divisors (248227291139).

1241136455665 is an equidigital number, since it uses as much as digits as its factorization.

1241136455665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248227291138.

The product of its digits is 2592000, while the sum is 49.

The spelling of 1241136455665 in words is "one trillion, two hundred forty-one billion, one hundred thirty-six million, four hundred fifty-five thousand, six hundred sixty-five".