118228811546 has 4 divisors (see below), whose sum is σ = 177343217322. Its totient is φ = 59114405772.

The previous prime is 118228811539. The next prime is 118228811549. The reversal of 118228811546 is 645118822811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645118822811 = 89 ⋅7248526099.

It can be written as a sum of positive squares in only one way, i.e., 81316795921 + 36912015625 = 285161^2 + 192125^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 118228811546.

It is not an unprimeable number, because it can be changed into a prime (118228811549) 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 as a sum of consecutive naturals, namely, 29557202885 + ... + 29557202888.

Almost surely, 2^118228811546 is an apocalyptic number.

118228811546 is a deficient number, since it is larger than the sum of its proper divisors (59114405776).

118228811546 is an equidigital number, since it uses as much as digits as its factorization.

118228811546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59114405775.

The product of its digits is 245760, while the sum is 47.

The spelling of 118228811546 in words is "one hundred eighteen billion, two hundred twenty-eight million, eight hundred eleven thousand, five hundred forty-six".