120446561649 has 16 divisors (see below), whose sum is σ = 164994482432. Its totient is φ = 78099717888.

The previous prime is 120446561591. The next prime is 120446561687. The reversal of 120446561649 is 946165644021.

It is not a de Polignac number, because 120446561649 - 2²⁵ = 120413007217 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120446561598 and 120446561607.

It is not an unprimeable number, because it can be changed into a prime (120446561149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122952 + ... + 505974.

It is an arithmetic number, because the mean of its divisors is an integer number (10312155152).

Almost surely, 2^120446561649 is an apocalyptic number.

It is an amenable number.

120446561649 is a deficient number, since it is larger than the sum of its proper divisors (44547920783).

120446561649 is a wasteful number, since it uses less digits than its factorization.

120446561649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385896.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 120446561649 in words is "one hundred twenty billion, four hundred forty-six million, five hundred sixty-one thousand, six hundred forty-nine".