20018291829111 has 64 divisors (see below), whose sum is σ = 31935299189760. Its totient is φ = 12347893877760.

The previous prime is 20018291829047. The next prime is 20018291829113. The reversal of 20018291829111 is 11192819281002.

20018291829111 is a `hidden beast` number, since 200 + 182 + 9 + 182 + 91 + 1 + 1 = 666.

It is not a de Polignac number, because 20018291829111 - 2⁶ = 20018291829047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20018291829113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10423275 + ... + 12193491.

It is an arithmetic number, because the mean of its divisors is an integer number (498989049840).

Almost surely, 2^{20018291829111} is an apocalyptic number.

20018291829111 is a deficient number, since it is larger than the sum of its proper divisors (11917007360649).

20018291829111 is a wasteful number, since it uses less digits than its factorization.

20018291829111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770661 (or 1770655 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 45.

The spelling of 20018291829111 in words is "twenty trillion, eighteen billion, two hundred ninety-one million, eight hundred twenty-nine thousand, one hundred eleven".