155203505513 has 8 divisors (see below), whose sum is σ = 178294480128. Its totient is φ = 132342292224.

The previous prime is 155203505491. The next prime is 155203505519. The reversal of 155203505513 is 315505302551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155203505513 - 2¹⁶ = 155203439977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155203505519) 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 7 ways as a sum of consecutive naturals, for example, 57438881 + ... + 57441582.

It is an arithmetic number, because the mean of its divisors is an integer number (22286810016).

Almost surely, 2^155203505513 is an apocalyptic number.

It is an amenable number.

155203505513 is a deficient number, since it is larger than the sum of its proper divisors (23090974615).

155203505513 is a wasteful number, since it uses less digits than its factorization.

155203505513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114880663.

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 155203505513 in words is "one hundred fifty-five billion, two hundred three million, five hundred five thousand, five hundred thirteen".