20368368367 has 4 divisors (see below), whose sum is σ = 20384319816. Its totient is φ = 20352416920.

The previous prime is 20368368343. The next prime is 20368368373. The reversal of 20368368367 is 76386386302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76386386302 = 2 ⋅38193193151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20368368367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20368368337) 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 in 3 ways as a sum of consecutive naturals, for example, 7973809 + ... + 7976362.

It is an arithmetic number, because the mean of its divisors is an integer number (5096079954).

Almost surely, 2^20368368367 is an apocalyptic number.

20368368367 is a deficient number, since it is larger than the sum of its proper divisors (15951449).

20368368367 is a wasteful number, since it uses less digits than its factorization.

20368368367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15951448.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 20368368367 in words is "twenty billion, three hundred sixty-eight million, three hundred sixty-eight thousand, three hundred sixty-seven".