11671371705 has 16 divisors (see below), whose sum is σ = 21341937024. Its totient is φ = 5335484160.

The previous prime is 11671371667. The next prime is 11671371713. The reversal of 11671371705 is 50717317611.

It is not a de Polignac number, because 11671371705 - 2¹⁰ = 11671370681 is a prime.

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, 55577856 + ... + 55578065.

It is an arithmetic number, because the mean of its divisors is an integer number (1333871064).

Almost surely, 2^11671371705 is an apocalyptic number.

11671371705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11671371705 is a deficient number, since it is larger than the sum of its proper divisors (9670565319).

11671371705 is a wasteful number, since it uses less digits than its factorization.

11671371705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111155936.

The product of its (nonzero) digits is 30870, while the sum is 39.

The spelling of 11671371705 in words is "eleven billion, six hundred seventy-one million, three hundred seventy-one thousand, seven hundred five".