120619996649 has 2 divisors, whose sum is σ = 120619996650. Its totient is φ = 120619996648.

The previous prime is 120619996639. The next prime is 120619996697. The reversal of 120619996649 is 946699916021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117237760000 + 3382236649 = 342400^2 + 58157^2 .

It is a cyclic number.

It is not a de Polignac number, because 120619996649 - 2²⁴ = 120603219433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120619996591 and 120619996600.

It is not a weakly prime, because it can be changed into another prime (120619996639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60309998324 + 60309998325.

It is an arithmetic number, because the mean of its divisors is an integer number (60309998325).

Almost surely, 2^120619996649 is an apocalyptic number.

It is an amenable number.

120619996649 is a deficient number, since it is larger than the sum of its proper divisors (1).

120619996649 is an equidigital number, since it uses as much as digits as its factorization.

120619996649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The spelling of 120619996649 in words is "one hundred twenty billion, six hundred nineteen million, nine hundred ninety-six thousand, six hundred forty-nine".