120646643727 has 16 divisors (see below), whose sum is σ = 173270919168. Its totient is φ = 74452345440.

The previous prime is 120646643723. The next prime is 120646643753. The reversal of 120646643727 is 727346646021.

It is not a de Polignac number, because 120646643727 - 2² = 120646643723 is a prime.

It is a super-2 number, since 2×120646643727² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120646643723) 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 15 ways as a sum of consecutive naturals, for example, 28199508 + ... + 28203785.

It is an arithmetic number, because the mean of its divisors is an integer number (10829432448).

Almost surely, 2^120646643727 is an apocalyptic number.

120646643727 is a deficient number, since it is larger than the sum of its proper divisors (52624275441).

120646643727 is a wasteful number, since it uses less digits than its factorization.

120646643727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56403350.

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 120646643727 in words is "one hundred twenty billion, six hundred forty-six million, six hundred forty-three thousand, seven hundred twenty-seven".