11920842775 has 6 divisors (see below), whose sum is σ = 14781845072. Its totient is φ = 9536674200.

The previous prime is 11920842767. The next prime is 11920842811. The reversal of 11920842775 is 57724802911.

It is not a de Polignac number, because 11920842775 - 2³ = 11920842767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238416831 + ... + 238416880.

Almost surely, 2^11920842775 is an apocalyptic number.

11920842775 is a deficient number, since it is larger than the sum of its proper divisors (2861002297).

11920842775 is an equidigital number, since it uses as much as digits as its factorization.

11920842775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476833721 (or 476833716 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 11920842775 in words is "eleven billion, nine hundred twenty million, eight hundred forty-two thousand, seven hundred seventy-five".