155601685112 has 8 divisors (see below), whose sum is σ = 291753159600. Its totient is φ = 77800842552.

The previous prime is 155601685081. The next prime is 155601685139. The reversal of 155601685112 is 211586106551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 155601685112.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9725105312 + ... + 9725105327.

It is an arithmetic number, because the mean of its divisors is an integer number (36469144950).

Almost surely, 2^155601685112 is an apocalyptic number.

It is an amenable number.

155601685112 is a deficient number, since it is larger than the sum of its proper divisors (136151474488).

155601685112 is a wasteful number, since it uses less digits than its factorization.

155601685112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450210645 (or 19450210641 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 41.

The spelling of 155601685112 in words is "one hundred fifty-five billion, six hundred one million, six hundred eighty-five thousand, one hundred twelve".