15128085503 has 2 divisors, whose sum is σ = 15128085504. Its totient is φ = 15128085502.

The previous prime is 15128085493. The next prime is 15128085541. The reversal of 15128085503 is 30558082151.

It is an a-pointer prime, because the next prime (15128085541) can be obtained adding 15128085503 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (30558082151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15128085503 - 2²² = 15123891199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15128085403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7564042751 + 7564042752.

It is an arithmetic number, because the mean of its divisors is an integer number (7564042752).

Almost surely, 2^15128085503 is an apocalyptic number.

15128085503 is a deficient number, since it is larger than the sum of its proper divisors (1).

15128085503 is an equidigital number, since it uses as much as digits as its factorization.

15128085503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 38.

The spelling of 15128085503 in words is "fifteen billion, one hundred twenty-eight million, eighty-five thousand, five hundred three".