118145109506 has 4 divisors (see below), whose sum is σ = 177217664262. Its totient is φ = 59072554752.

The previous prime is 118145109499. The next prime is 118145109529. The reversal of 118145109506 is 605901541811.

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

It can be written as a sum of positive squares in only one way, i.e., 104755148281 + 13389961225 = 323659^2 + 115715^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29536277375 + ... + 29536277378.

Almost surely, 2^118145109506 is an apocalyptic number.

118145109506 is a deficient number, since it is larger than the sum of its proper divisors (59072554756).

118145109506 is an equidigital number, since it uses as much as digits as its factorization.

118145109506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59072554755.

The product of its (nonzero) digits is 43200, while the sum is 41.

The spelling of 118145109506 in words is "one hundred eighteen billion, one hundred forty-five million, one hundred nine thousand, five hundred six".