118121384977 has 4 divisors (see below), whose sum is σ = 118914146100. Its totient is φ = 117328623856.

The previous prime is 118121384959. The next prime is 118121385037. The reversal of 118121384977 is 779483121811.

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 21986661841 + 96134723136 = 148279^2 + 310056^2 .

It is a cyclic number.

It is not a de Polignac number, because 118121384977 - 2³⁵ = 83761646609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118121384917) 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, 396380338 + ... + 396380635.

It is an arithmetic number, because the mean of its divisors is an integer number (29728536525).

Almost surely, 2^118121384977 is an apocalyptic number.

It is an amenable number.

118121384977 is a deficient number, since it is larger than the sum of its proper divisors (792761123).

118121384977 is an equidigital number, since it uses as much as digits as its factorization.

118121384977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792761122.

The product of its digits is 677376, while the sum is 52.

The spelling of 118121384977 in words is "one hundred eighteen billion, one hundred twenty-one million, three hundred eighty-four thousand, nine hundred seventy-seven".