201505020513 has 16 divisors (see below), whose sum is σ = 271978162752. Its totient is φ = 132690600000.

The previous prime is 201505020503. The next prime is 201505020533. The reversal of 201505020513 is 315020505102.

It is a happy number.

201505020513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201505020513 - 2⁹ = 201505020001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201505020503) 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, 662263 + ... + 917388.

It is an arithmetic number, because the mean of its divisors is an integer number (16998635172).

Almost surely, 2^201505020513 is an apocalyptic number.

It is an amenable number.

201505020513 is a deficient number, since it is larger than the sum of its proper divisors (70473142239).

201505020513 is a wasteful number, since it uses less digits than its factorization.

201505020513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580176.

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 201505020513 its reverse (315020505102), we get a palindrome (516525525615).

The spelling of 201505020513 in words is "two hundred one billion, five hundred five million, twenty thousand, five hundred thirteen".