87381500039 has 2 divisors, whose sum is σ = 87381500040. Its totient is φ = 87381500038.

The previous prime is 87381500033. The next prime is 87381500047. The reversal of 87381500039 is 93000518378.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87381500039 - 2²⁰ = 87380451463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87381500033) 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, 43690750019 + 43690750020.

It is an arithmetic number, because the mean of its divisors is an integer number (43690750020).

Almost surely, 2^87381500039 is an apocalyptic number.

87381500039 is a deficient number, since it is larger than the sum of its proper divisors (1).

87381500039 is an equidigital number, since it uses as much as digits as its factorization.

87381500039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 87381500039 in words is "eighty-seven billion, three hundred eighty-one million, five hundred thousand, thirty-nine".