67815000009 has 16 divisors (see below), whose sum is σ = 100622939200. Its totient is φ = 45139677408.

The previous prime is 67815000007. The next prime is 67815000037. The reversal of 67815000009 is 90000051876.

It is not a de Polignac number, because 67815000009 - 2¹ = 67815000007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67815000007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935724 + ... + 1970445.

It is an arithmetic number, because the mean of its divisors is an integer number (6288933700).

Almost surely, 2^67815000009 is an apocalyptic number.

It is an amenable number.

67815000009 is a deficient number, since it is larger than the sum of its proper divisors (32807939191).

67815000009 is a wasteful number, since it uses less digits than its factorization.

67815000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906821 (or 3906815 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 67815000009 in words is "sixty-seven billion, eight hundred fifteen million, nine", and thus it is an aban number.