87381367009 has 4 divisors (see below), whose sum is σ = 88612090560. Its totient is φ = 86150643460.

The previous prime is 87381367001. The next prime is 87381367019. The reversal of 87381367009 is 90076318378.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87381367009 - 2³ = 87381367001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87381367001) 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 in 3 ways as a sum of consecutive naturals, for example, 615361669 + ... + 615361810.

It is an arithmetic number, because the mean of its divisors is an integer number (22153022640).

Almost surely, 2^87381367009 is an apocalyptic number.

It is an amenable number.

87381367009 is a deficient number, since it is larger than the sum of its proper divisors (1230723551).

87381367009 is a wasteful number, since it uses less digits than its factorization.

87381367009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230723550.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 87381367009 in words is "eighty-seven billion, three hundred eighty-one million, three hundred sixty-seven thousand, nine".