15238678087 has 2 divisors, whose sum is σ = 15238678088. Its totient is φ = 15238678086.

The previous prime is 15238677997. The next prime is 15238678121. The reversal of 15238678087 is 78087683251.

It is a happy number.

15238678087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78087683251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15238678087 - 2⁷ = 15238677959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15238678187) 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, 7619339043 + 7619339044.

It is an arithmetic number, because the mean of its divisors is an integer number (7619339044).

Almost surely, 2^15238678087 is an apocalyptic number.

15238678087 is a deficient number, since it is larger than the sum of its proper divisors (1).

15238678087 is an equidigital number, since it uses as much as digits as its factorization.

15238678087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 15238678087 in words is "fifteen billion, two hundred thirty-eight million, six hundred seventy-eight thousand, eighty-seven".