11585436780655 has 8 divisors (see below), whose sum is σ = 14720319674352. Its totient is φ = 8723152399488.

The previous prime is 11585436780653. The next prime is 11585436780661. The reversal of 11585436780655 is 55608763458511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11585436780655 - 2¹ = 11585436780653 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 (11585436780653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68149628037 + ... + 68149628206.

It is an arithmetic number, because the mean of its divisors is an integer number (1840039959294).

Almost surely, 2^{11585436780655} is an apocalyptic number.

11585436780655 is a deficient number, since it is larger than the sum of its proper divisors (3134882893697).

11585436780655 is a wasteful number, since it uses less digits than its factorization.

11585436780655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136299256265.

The product of its (nonzero) digits is 120960000, while the sum is 64.

The spelling of 11585436780655 in words is "eleven trillion, five hundred eighty-five billion, four hundred thirty-six million, seven hundred eighty thousand, six hundred fifty-five".