15402304243 has 2 divisors, whose sum is σ = 15402304244. Its totient is φ = 15402304242.

The previous prime is 15402304217. The next prime is 15402304259. The reversal of 15402304243 is 34240320451.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15402304243 - 2²¹ = 15400207091 is a prime.

It is not a weakly prime, because it can be changed into another prime (15402304843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7701152121 + 7701152122.

It is an arithmetic number, because the mean of its divisors is an integer number (7701152122).

Almost surely, 2^15402304243 is an apocalyptic number.

15402304243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15402304243 is an equidigital number, since it uses as much as digits as its factorization.

15402304243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 15402304243 its reverse (34240320451), we get a palindrome (49642624694).

The spelling of 15402304243 in words is "fifteen billion, four hundred two million, three hundred four thousand, two hundred forty-three".