155799380765 has 16 divisors (see below), whose sum is σ = 213750248448. Its totient is φ = 106792598016.

The previous prime is 155799380747. The next prime is 155799380843. The reversal of 155799380765 is 567083997551.

155799380765 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 155799380765 - 2¹⁰ = 155799379741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 767597 + ... + 949106.

It is an arithmetic number, because the mean of its divisors is an integer number (13359390528).

Almost surely, 2^155799380765 is an apocalyptic number.

It is an amenable number.

155799380765 is a deficient number, since it is larger than the sum of its proper divisors (57950867683).

155799380765 is a wasteful number, since it uses less digits than its factorization.

155799380765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719308.

The product of its (nonzero) digits is 71442000, while the sum is 65.

The spelling of 155799380765 in words is "one hundred fifty-five billion, seven hundred ninety-nine million, three hundred eighty thousand, seven hundred sixty-five".