120717195649 has 4 divisors (see below), whose sum is σ = 123524572336. Its totient is φ = 117909818964.

The previous prime is 120717195623. The next prime is 120717195667. The reversal of 120717195649 is 946591717021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120717195649 - 2¹⁷ = 120717064577 is a prime.

It is a super-3 number, since 3×120717195649³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120717195596 and 120717195605.

It is not an unprimeable number, because it can be changed into a prime (120717195149) 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 in 3 ways as a sum of consecutive naturals, for example, 1403688279 + ... + 1403688364.

It is an arithmetic number, because the mean of its divisors is an integer number (30881143084).

Almost surely, 2^120717195649 is an apocalyptic number.

It is an amenable number.

120717195649 is a deficient number, since it is larger than the sum of its proper divisors (2807376687).

120717195649 is an equidigital number, since it uses as much as digits as its factorization.

120717195649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807376686.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 120717195649 in words is "one hundred twenty billion, seven hundred seventeen million, one hundred ninety-five thousand, six hundred forty-nine".