118909278571 has 4 divisors (see below), whose sum is σ = 120538172872. Its totient is φ = 117280384272.

The previous prime is 118909278569. The next prime is 118909278601. The reversal of 118909278571 is 175872909811.

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

It is a cyclic number.

It is not a de Polignac number, because 118909278571 - 2¹ = 118909278569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118909278071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814447041 + ... + 814447186.

It is an arithmetic number, because the mean of its divisors is an integer number (30134543218).

Almost surely, 2^118909278571 is an apocalyptic number.

118909278571 is a deficient number, since it is larger than the sum of its proper divisors (1628894301).

118909278571 is an equidigital number, since it uses as much as digits as its factorization.

118909278571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628894300.

The product of its (nonzero) digits is 2540160, while the sum is 58.

The spelling of 118909278571 in words is "one hundred eighteen billion, nine hundred nine million, two hundred seventy-eight thousand, five hundred seventy-one".