20336666111 has 4 divisors (see below), whose sum is σ = 20442037632. Its totient is φ = 20231294592.

The previous prime is 20336666101. The next prime is 20336666117. The reversal of 20336666111 is 11166663302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11166663302 = 2 ⋅5583331651.

It is a cyclic number.

It is not a de Polignac number, because 20336666111 - 2¹⁰ = 20336665087 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 (20336666117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52685471 + ... + 52685856.

It is an arithmetic number, because the mean of its divisors is an integer number (5110509408).

Almost surely, 2^20336666111 is an apocalyptic number.

20336666111 is a deficient number, since it is larger than the sum of its proper divisors (105371521).

20336666111 is a wasteful number, since it uses less digits than its factorization.

20336666111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105371520.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 20336666111 in words is "twenty billion, three hundred thirty-six million, six hundred sixty-six thousand, one hundred eleven".