15144221563 has 2 divisors, whose sum is σ = 15144221564. Its totient is φ = 15144221562.

The previous prime is 15144221549. The next prime is 15144221581. The reversal of 15144221563 is 36512244151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15144221563 - 2²¹ = 15142124411 is a prime.

It is not a weakly prime, because it can be changed into another prime (15144221593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7572110781 + 7572110782.

It is an arithmetic number, because the mean of its divisors is an integer number (7572110782).

Almost surely, 2^15144221563 is an apocalyptic number.

15144221563 is a deficient number, since it is larger than the sum of its proper divisors (1).

15144221563 is an equidigital number, since it uses as much as digits as its factorization.

15144221563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The spelling of 15144221563 in words is "fifteen billion, one hundred forty-four million, two hundred twenty-one thousand, five hundred sixty-three".