11888281705 has 4 divisors (see below), whose sum is σ = 14265938052. Its totient is φ = 9510625360.

The previous prime is 11888281693. The next prime is 11888281709. The reversal of 11888281705 is 50718288811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50718288811 = 281 ⋅180492131.

It can be written as a sum of positive squares in 2 ways, for example, as 8361822249 + 3526459456 = 91443^2 + 59384^2 .

It is not a de Polignac number, because 11888281705 - 2¹⁷ = 11888150633 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 not an unprimeable number, because it can be changed into a prime (11888281709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188828166 + ... + 1188828175.

It is an arithmetic number, because the mean of its divisors is an integer number (3566484513).

Almost surely, 2^11888281705 is an apocalyptic number.

It is an amenable number.

11888281705 is a deficient number, since it is larger than the sum of its proper divisors (2377656347).

11888281705 is an equidigital number, since it uses as much as digits as its factorization.

11888281705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377656346.

The product of its (nonzero) digits is 286720, while the sum is 49.

The spelling of 11888281705 in words is "eleven billion, eight hundred eighty-eight million, two hundred eighty-one thousand, seven hundred five".