11706981705 has 16 divisors (see below), whose sum is σ = 20812412160. Its totient is φ = 6243723504.

The previous prime is 11706981697. The next prime is 11706981731. The reversal of 11706981705 is 50718960711.

It is not a de Polignac number, because 11706981705 - 2³ = 11706981697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43359057 + ... + 43359326.

It is an arithmetic number, because the mean of its divisors is an integer number (1300775760).

Almost surely, 2^11706981705 is an apocalyptic number.

11706981705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11706981705 is a deficient number, since it is larger than the sum of its proper divisors (9105430455).

11706981705 is an equidigital number, since it uses as much as digits as its factorization.

11706981705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86718397 (or 86718391 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 45.

The spelling of 11706981705 in words is "eleven billion, seven hundred six million, nine hundred eighty-one thousand, seven hundred five".