1241136455645 has 4 divisors (see below), whose sum is σ = 1489363746780. Its totient is φ = 992909164512.

The previous prime is 1241136455627. The next prime is 1241136455681. The reversal of 1241136455645 is 5465546311421.

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 791037696409 + 450098759236 = 889403^2 + 670894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241136455645 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1241136455645.

It is a congruent 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, 124113645560 + ... + 124113645569.

It is an arithmetic number, because the mean of its divisors is an integer number (372340936695).

Almost surely, 2^{1241136455645} is an apocalyptic number.

It is an amenable number.

1241136455645 is a deficient number, since it is larger than the sum of its proper divisors (248227291135).

1241136455645 is an equidigital number, since it uses as much as digits as its factorization.

1241136455645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248227291134.

The product of its digits is 1728000, while the sum is 47.

The spelling of 1241136455645 in words is "one trillion, two hundred forty-one billion, one hundred thirty-six million, four hundred fifty-five thousand, six hundred forty-five".