11912113705 has 4 divisors (see below), whose sum is σ = 14294536452. Its totient is φ = 9529690960.

The previous prime is 11912113687. The next prime is 11912113711. The reversal of 11912113705 is 50731121911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4414805136 + 7497308569 = 66444^2 + 86587^2 .

It is not a de Polignac number, because 11912113705 - 2¹¹ = 11912111657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191211366 + ... + 1191211375.

It is an arithmetic number, because the mean of its divisors is an integer number (3573634113).

Almost surely, 2^11912113705 is an apocalyptic number.

It is an amenable number.

11912113705 is a deficient number, since it is larger than the sum of its proper divisors (2382422747).

11912113705 is an equidigital number, since it uses as much as digits as its factorization.

11912113705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382422746.

The product of its (nonzero) digits is 1890, while the sum is 31.

The spelling of 11912113705 in words is "eleven billion, nine hundred twelve million, one hundred thirteen thousand, seven hundred five".