11865601355 has 8 divisors (see below), whose sum is σ = 14472143664. Its totient is φ = 9336866400.

The previous prime is 11865601313. The next prime is 11865601381. The reversal of 11865601355 is 55310656811.

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

It is not a de Polignac number, because 11865601355 - 2¹⁴ = 11865584971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19451501 + ... + 19452110.

It is an arithmetic number, because the mean of its divisors is an integer number (1809017958).

Almost surely, 2^11865601355 is an apocalyptic number.

11865601355 is a deficient number, since it is larger than the sum of its proper divisors (2606542309).

11865601355 is an equidigital number, since it uses as much as digits as its factorization.

11865601355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38903677.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 11865601355 in words is "eleven billion, eight hundred sixty-five million, six hundred one thousand, three hundred fifty-five".