15530340233 has 2 divisors, whose sum is σ = 15530340234. Its totient is φ = 15530340232.

The previous prime is 15530340197. The next prime is 15530340253. The reversal of 15530340233 is 33204303551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7941839689 + 7588500544 = 89117^2 + 87112^2 .

It is an emirp because it is prime and its reverse (33204303551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15530340233 - 2¹⁴ = 15530323849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15530340196 and 15530340205.

It is not a weakly prime, because it can be changed into another prime (15530340253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765170116 + 7765170117.

It is an arithmetic number, because the mean of its divisors is an integer number (7765170117).

Almost surely, 2^15530340233 is an apocalyptic number.

It is an amenable number.

15530340233 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530340233 is an equidigital number, since it uses as much as digits as its factorization.

15530340233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 29.

Adding to 15530340233 its reverse (33204303551), we get a palindrome (48734643784).

The spelling of 15530340233 in words is "fifteen billion, five hundred thirty million, three hundred forty thousand, two hundred thirty-three".