20954514607111 has 2 divisors, whose sum is σ = 20954514607112. Its totient is φ = 20954514607110.

The previous prime is 20954514607099. The next prime is 20954514607217. The reversal of 20954514607111 is 11170641545902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20954514607111 - 2¹⁹ = 20954514082823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20954514607811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10477257303555 + 10477257303556.

It is an arithmetic number, because the mean of its divisors is an integer number (10477257303556).

Almost surely, 2^{20954514607111} is an apocalyptic number.

20954514607111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20954514607111 is an equidigital number, since it uses as much as digits as its factorization.

20954514607111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 20954514607111 in words is "twenty trillion, nine hundred fifty-four billion, five hundred fourteen million, six hundred seven thousand, one hundred eleven".