11705399137 has 8 divisors (see below), whose sum is σ = 12121209000. Its totient is φ = 11290401024.

The previous prime is 11705399093. The next prime is 11705399159. The reversal of 11705399137 is 73199350711.

It can be written as a sum of positive squares in 4 ways, for example, as 5700854016 + 6004545121 = 75504^2 + 77489^2 .

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 11705399137 - 2⁷ = 11705399009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11705399737) 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, 173512 + ... + 231337.

It is an arithmetic number, because the mean of its divisors is an integer number (1515151125).

Almost surely, 2^11705399137 is an apocalyptic number.

It is an amenable number.

11705399137 is a deficient number, since it is larger than the sum of its proper divisors (415809863).

11705399137 is an equidigital number, since it uses as much as digits as its factorization.

11705399137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405875.

The product of its (nonzero) digits is 178605, while the sum is 46.

The spelling of 11705399137 in words is "eleven billion, seven hundred five million, three hundred ninety-nine thousand, one hundred thirty-seven".