20111281880611 has 2 divisors, whose sum is σ = 20111281880612. Its totient is φ = 20111281880610.

The previous prime is 20111281880539. The next prime is 20111281880663. The reversal of 20111281880611 is 11608818211102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111281880611 - 2¹⁵ = 20111281847843 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111281881611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055640940305 + 10055640940306.

It is an arithmetic number, because the mean of its divisors is an integer number (10055640940306).

Almost surely, 2^{20111281880611} is an apocalyptic number.

20111281880611 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111281880611 is an equidigital number, since it uses as much as digits as its factorization.

20111281880611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 40.

The spelling of 20111281880611 in words is "twenty trillion, one hundred eleven billion, two hundred eighty-one million, eight hundred eighty thousand, six hundred eleven".