178120663879 has 16 divisors (see below), whose sum is σ = 183260024640. Its totient is φ = 173049177600.

The previous prime is 178120663871. The next prime is 178120663907. The reversal of 178120663879 is 978366021871.

178120663879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 178120663879 - 2³ = 178120663871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178120663871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10257054 + ... + 10274404.

It is an arithmetic number, because the mean of its divisors is an integer number (11453751540).

Almost surely, 2^178120663879 is an apocalyptic number.

178120663879 is a deficient number, since it is larger than the sum of its proper divisors (5139360761).

178120663879 is a wasteful number, since it uses less digits than its factorization.

178120663879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19290.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 178120663879 in words is "one hundred seventy-eight billion, one hundred twenty million, six hundred sixty-three thousand, eight hundred seventy-nine".