120636551775 has 24 divisors (see below), whose sum is σ = 199474990720. Its totient is φ = 64332217440.

The previous prime is 120636551771. The next prime is 120636551779. The reversal of 120636551775 is 577155636021.

It is an interprime number because it is at equal distance from previous prime (120636551771) and next prime (120636551779).

It is not a de Polignac number, because 120636551775 - 2² = 120636551771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120636551771) 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 23 ways as a sum of consecutive naturals, for example, 612624 + ... + 785226.

Almost surely, 2^120636551775 is an apocalyptic number.

120636551775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120636551775 is a deficient number, since it is larger than the sum of its proper divisors (78838438945).

120636551775 is a wasteful number, since it uses less digits than its factorization.

120636551775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181935 (or 181930 counting only the distinct ones).

The product of its (nonzero) digits is 1323000, while the sum is 48.

The spelling of 120636551775 in words is "one hundred twenty billion, six hundred thirty-six million, five hundred fifty-one thousand, seven hundred seventy-five".