20543017126 has 8 divisors (see below), whose sum is σ = 30815545320. Its totient is φ = 10271168688.

The previous prime is 20543017087. The next prime is 20543017177. The reversal of 20543017126 is 62171034502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86116 + ... + 220231.

It is an arithmetic number, because the mean of its divisors is an integer number (3851943165).

Almost surely, 2^20543017126 is an apocalyptic number.

20543017126 is a deficient number, since it is larger than the sum of its proper divisors (10272528194).

20543017126 is a wasteful number, since it uses less digits than its factorization.

20543017126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339878.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 20543017126 in words is "twenty billion, five hundred forty-three million, seventeen thousand, one hundred twenty-six".