20350201666867 has 4 divisors (see below), whose sum is σ = 20396557479760. Its totient is φ = 20303845853976.

The previous prime is 20350201666853. The next prime is 20350201666943. The reversal of 20350201666867 is 76866610205302.

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

It is a cyclic number.

It is not a de Polignac number, because 20350201666867 - 2²⁷ = 20350067449139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20350291666867) 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, 23177905788 + ... + 23177906665.

It is an arithmetic number, because the mean of its divisors is an integer number (5099139369940).

Almost surely, 2^{20350201666867} is an apocalyptic number.

20350201666867 is a deficient number, since it is larger than the sum of its proper divisors (46355812893).

20350201666867 is an equidigital number, since it uses as much as digits as its factorization.

20350201666867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46355812892.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 20350201666867 in words is "twenty trillion, three hundred fifty billion, two hundred one million, six hundred sixty-six thousand, eight hundred sixty-seven".