118045431887871 has 4 divisors (see below), whose sum is σ = 157393909183832. Its totient is φ = 78696954591912.

The previous prime is 118045431887869. The next prime is 118045431887879. The reversal of 118045431887871 is 178788134540811.

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

It is not a de Polignac number, because 118045431887871 - 2¹ = 118045431887869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118045431887879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19674238647976 + ... + 19674238647981.

It is an arithmetic number, because the mean of its divisors is an integer number (39348477295958).

Almost surely, 2^{118045431887871} is an apocalyptic number.

118045431887871 is a deficient number, since it is larger than the sum of its proper divisors (39348477295961).

118045431887871 is an equidigital number, since it uses as much as digits as its factorization.

118045431887871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39348477295960.

The product of its (nonzero) digits is 48168960, while the sum is 66.

The spelling of 118045431887871 in words is "one hundred eighteen trillion, forty-five billion, four hundred thirty-one million, eight hundred eighty-seven thousand, eight hundred seventy-one".