11520515293 has 6 divisors (see below), whose sum is σ = 13401415806. Its totient is φ = 9874727352.

The previous prime is 11520515261. The next prime is 11520515299. The reversal of 11520515293 is 39251502511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11122233444 + 398281849 = 105462^2 + 19957^2 .

It is not a de Polignac number, because 11520515293 - 2⁵ = 11520515261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520515299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117556230 + ... + 117556327.

It is an arithmetic number, because the mean of its divisors is an integer number (2233569301).

Almost surely, 2^11520515293 is an apocalyptic number.

It is an amenable number.

11520515293 is a deficient number, since it is larger than the sum of its proper divisors (1880900513).

11520515293 is an equidigital number, since it uses as much as digits as its factorization.

11520515293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235112571 (or 235112564 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 11520515293 in words is "eleven billion, five hundred twenty million, five hundred fifteen thousand, two hundred ninety-three".