120405497856 has 96 divisors (see below), whose sum is σ = 366860632320. Its totient is φ = 34401558528.

The previous prime is 120405497833. The next prime is 120405497879. The reversal of 120405497856 is 658794504021.

120405497856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (120405497833) and next prime (120405497879).

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 120405497799 and 120405497808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356796 + ... + 1442811.

It is an arithmetic number, because the mean of its divisors is an integer number (3821464920).

Almost surely, 2^120405497856 is an apocalyptic number.

120405497856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

120405497856 is an abundant number, since it is smaller than the sum of its proper divisors (246455134464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120405497856 is an equidigital number, since it uses as much as digits as its factorization.

120405497856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799639 (or 2799619 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 120405497856 in words is "one hundred twenty billion, four hundred five million, four hundred ninety-seven thousand, eight hundred fifty-six".