87381367019 has 2 divisors, whose sum is σ = 87381367020. Its totient is φ = 87381367018.

The previous prime is 87381367001. The next prime is 87381367027. The reversal of 87381367019 is 91076318378.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87381367019 is a prime.

It is a super-2 number, since 2×87381367019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87381367049) 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, 43690683509 + 43690683510.

It is an arithmetic number, because the mean of its divisors is an integer number (43690683510).

Almost surely, 2^87381367019 is an apocalyptic number.

87381367019 is a deficient number, since it is larger than the sum of its proper divisors (1).

87381367019 is an equidigital number, since it uses as much as digits as its factorization.

87381367019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 87381367019 in words is "eighty-seven billion, three hundred eighty-one million, three hundred sixty-seven thousand, nineteen".