118905120251 has 4 divisors (see below), whose sum is σ = 124074908112. Its totient is φ = 113735332392.

The previous prime is 118905120247. The next prime is 118905120259. The reversal of 118905120251 is 152021509811.

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 118905120251 - 2² = 118905120247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118905120259) 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, 2584893896 + ... + 2584893941.

It is an arithmetic number, because the mean of its divisors is an integer number (31018727028).

Almost surely, 2^118905120251 is an apocalyptic number.

118905120251 is a deficient number, since it is larger than the sum of its proper divisors (5169787861).

118905120251 is an equidigital number, since it uses as much as digits as its factorization.

118905120251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169787860.

The product of its (nonzero) digits is 7200, while the sum is 35.

The spelling of 118905120251 in words is "one hundred eighteen billion, nine hundred five million, one hundred twenty thousand, two hundred fifty-one".