20541181899873 has 8 divisors (see below), whose sum is σ = 28332664689600. Its totient is φ = 13221910188368.

The previous prime is 20541181899841. The next prime is 20541181899881. The reversal of 20541181899873 is 37899818114502.

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 20541181899873 - 2⁵ = 20541181899841 is a prime.

It is a super-2 number, since 2×20541181899873² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20541181499873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118052769453 + ... + 118052769626.

It is an arithmetic number, because the mean of its divisors is an integer number (3541583086200).

Almost surely, 2^{20541181899873} is an apocalyptic number.

It is an amenable number.

20541181899873 is a deficient number, since it is larger than the sum of its proper divisors (7791482789727).

20541181899873 is a wasteful number, since it uses less digits than its factorization.

20541181899873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236105539111.

The product of its (nonzero) digits is 34836480, while the sum is 66.

The spelling of 20541181899873 in words is "twenty trillion, five hundred forty-one billion, one hundred eighty-one million, eight hundred ninety-nine thousand, eight hundred seventy-three".