15121205063 has 2 divisors, whose sum is σ = 15121205064. Its totient is φ = 15121205062.

The previous prime is 15121205053. The next prime is 15121205111. The reversal of 15121205063 is 36050212151.

15121205063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (36050212151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15121205063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15121205053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560602531 + 7560602532.

It is an arithmetic number, because the mean of its divisors is an integer number (7560602532).

Almost surely, 2^15121205063 is an apocalyptic number.

15121205063 is a deficient number, since it is larger than the sum of its proper divisors (1).

15121205063 is an equidigital number, since it uses as much as digits as its factorization.

15121205063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 15121205063 in words is "fifteen billion, one hundred twenty-one million, two hundred five thousand, sixty-three".