1205530501513 has 24 divisors (see below), whose sum is σ = 1362338317440. Its totient is φ = 1064270338560.

The previous prime is 1205530501501. The next prime is 1205530501517. The reversal of 1205530501513 is 3151050355021.

It is not a de Polignac number, because 1205530501513 - 2²¹ = 1205528404361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205530501517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36952953 + ... + 36985561.

It is an arithmetic number, because the mean of its divisors is an integer number (56764096560).

Almost surely, 2^{1205530501513} is an apocalyptic number.

1205530501513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1205530501513 is a deficient number, since it is larger than the sum of its proper divisors (156807815927).

1205530501513 is a wasteful number, since it uses less digits than its factorization.

1205530501513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42169 (or 42156 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 1205530501513 its reverse (3151050355021), we get a palindrome (4356580856534).

The spelling of 1205530501513 in words is "one trillion, two hundred five billion, five hundred thirty million, five hundred one thousand, five hundred thirteen".