20016907867 has 4 divisors (see below), whose sum is σ = 21836626776. Its totient is φ = 18197188960.

The previous prime is 20016907837. The next prime is 20016907877. The reversal of 20016907867 is 76870961002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20016907867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20016907837) 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, 909859438 + ... + 909859459.

It is an arithmetic number, because the mean of its divisors is an integer number (5459156694).

Almost surely, 2^20016907867 is an apocalyptic number.

20016907867 is a deficient number, since it is larger than the sum of its proper divisors (1819718909).

20016907867 is a wasteful number, since it uses less digits than its factorization.

20016907867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819718908.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 20016907867 in words is "twenty billion, sixteen million, nine hundred seven thousand, eight hundred sixty-seven".