20354656662111 has 8 divisors (see below), whose sum is σ = 27161733179520. Its totient is φ = 13558675626392.

The previous prime is 20354656662107. The next prime is 20354656662113. The reversal of 20354656662111 is 11126665645302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20354656662111 - 2² = 20354656662107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354656662113) 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 7 ways as a sum of consecutive naturals, for example, 2773866141 + ... + 2773873478.

It is an arithmetic number, because the mean of its divisors is an integer number (3395216647440).

Almost surely, 2^{20354656662111} is an apocalyptic number.

20354656662111 is a deficient number, since it is larger than the sum of its proper divisors (6807076517409).

20354656662111 is a wasteful number, since it uses less digits than its factorization.

20354656662111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547740845.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 20354656662111 in words is "twenty trillion, three hundred fifty-four billion, six hundred fifty-six million, six hundred sixty-two thousand, one hundred eleven".