11605051065 has 8 divisors (see below), whose sum is σ = 18568081728. Its totient is φ = 6189360560.

The previous prime is 11605051049. The next prime is 11605051067. The reversal of 11605051065 is 56015050611.

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

It is not a de Polignac number, because 11605051065 - 2⁴ = 11605051049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11605051067) by changing a digit.

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, 386835021 + ... + 386835050.

It is an arithmetic number, because the mean of its divisors is an integer number (2321010216).

Almost surely, 2^11605051065 is an apocalyptic number.

11605051065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11605051065 is a deficient number, since it is larger than the sum of its proper divisors (6963030663).

11605051065 is an equidigital number, since it uses as much as digits as its factorization.

11605051065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773670079.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 11605051065 in words is "eleven billion, six hundred five million, fifty-one thousand, sixty-five".