20270878643543 has 8 divisors (see below), whose sum is σ = 22114697521536. Its totient is φ = 18427228387000.

The previous prime is 20270878643467. The next prime is 20270878643563. The reversal of 20270878643543 is 34534687807202.

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 20270878643543 - 2³⁶ = 20202159166807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270878643563) 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, 41903933 + ... + 42384918.

It is an arithmetic number, because the mean of its divisors is an integer number (2764337190192).

Almost surely, 2^{20270878643543} is an apocalyptic number.

20270878643543 is a deficient number, since it is larger than the sum of its proper divisors (1843818877993).

20270878643543 is a wasteful number, since it uses less digits than its factorization.

20270878643543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84310725.

The product of its (nonzero) digits is 54190080, while the sum is 59.

The spelling of 20270878643543 in words is "twenty trillion, two hundred seventy billion, eight hundred seventy-eight million, six hundred forty-three thousand, five hundred forty-three".