15009868997 has 2 divisors, whose sum is σ = 15009868998. Its totient is φ = 15009868996.

The previous prime is 15009868901. The next prime is 15009869011. The reversal of 15009868997 is 79986890051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7640333281 + 7369535716 = 87409^2 + 85846^2 .

It is a cyclic number.

It is not a de Polignac number, because 15009868997 - 2¹² = 15009864901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15009868297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7504934498 + 7504934499.

It is an arithmetic number, because the mean of its divisors is an integer number (7504934499).

Almost surely, 2^15009868997 is an apocalyptic number.

It is an amenable number.

15009868997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15009868997 is an equidigital number, since it uses as much as digits as its factorization.

15009868997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 62.

The spelling of 15009868997 in words is "fifteen billion, nine million, eight hundred sixty-eight thousand, nine hundred ninety-seven".