15530240413 has 2 divisors, whose sum is σ = 15530240414. Its totient is φ = 15530240412.

The previous prime is 15530240357. The next prime is 15530240419. The reversal of 15530240413 is 31404203551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10738555129 + 4791685284 = 103627^2 + 69222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15530240413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15530240419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765120206 + 7765120207.

It is an arithmetic number, because the mean of its divisors is an integer number (7765120207).

Almost surely, 2^15530240413 is an apocalyptic number.

It is an amenable number.

15530240413 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530240413 is an equidigital number, since it uses as much as digits as its factorization.

15530240413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 15530240413 its reverse (31404203551), we get a palindrome (46934443964).

The spelling of 15530240413 in words is "fifteen billion, five hundred thirty million, two hundred forty thousand, four hundred thirteen".