120386819561 has 2 divisors, whose sum is σ = 120386819562. Its totient is φ = 120386819560.

The previous prime is 120386819537. The next prime is 120386819563. The reversal of 120386819561 is 165918683021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119494662400 + 892157161 = 345680^2 + 29869^2 .

It is a cyclic number.

It is not a de Polignac number, because 120386819561 - 2¹⁴ = 120386803177 is a prime.

Together with 120386819563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120386819563) by changing a digit.

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, 60193409780 + 60193409781.

It is an arithmetic number, because the mean of its divisors is an integer number (60193409781).

Almost surely, 2^120386819561 is an apocalyptic number.

It is an amenable number.

120386819561 is a deficient number, since it is larger than the sum of its proper divisors (1).

120386819561 is an equidigital number, since it uses as much as digits as its factorization.

120386819561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 120386819561 in words is "one hundred twenty billion, three hundred eighty-six million, eight hundred nineteen thousand, five hundred sixty-one".