120978612185 has 4 divisors (see below), whose sum is σ = 145174334628. Its totient is φ = 96782889744.

The previous prime is 120978612173. The next prime is 120978612193. The reversal of 120978612185 is 581216879021.

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 66970711369 + 54007900816 = 258787^2 + 232396^2 .

It is a cyclic number.

It is not a de Polignac number, because 120978612185 - 2⁴ = 120978612169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12097861214 + ... + 12097861223.

It is an arithmetic number, because the mean of its divisors is an integer number (36293583657).

Almost surely, 2^120978612185 is an apocalyptic number.

It is an amenable number.

120978612185 is a deficient number, since it is larger than the sum of its proper divisors (24195722443).

120978612185 is an equidigital number, since it uses as much as digits as its factorization.

120978612185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24195722442.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 120978612185 in words is "one hundred twenty billion, nine hundred seventy-eight million, six hundred twelve thousand, one hundred eighty-five".