20430854728101 has 20 divisors (see below), whose sum is σ = 30673533396000. Its totient is φ = 13552124733576.

The previous prime is 20430854728069. The next prime is 20430854728121. The reversal of 20430854728101 is 10182745803402.

20430854728101 is a `hidden beast` number, since 20 + 4 + 3 + 0 + 8 + 547 + 2 + 81 + 0 + 1 = 666.

It is not a de Polignac number, because 20430854728101 - 2⁵ = 20430854728069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430854728121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 633734571 + ... + 633766808.

It is an arithmetic number, because the mean of its divisors is an integer number (1533676669800).

Almost surely, 2^{20430854728101} is an apocalyptic number.

It is an amenable number.

20430854728101 is a deficient number, since it is larger than the sum of its proper divisors (10242678667899).

20430854728101 is a wasteful number, since it uses less digits than its factorization.

20430854728101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267501590 (or 1267501581 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 20430854728101 in words is "twenty trillion, four hundred thirty billion, eight hundred fifty-four million, seven hundred twenty-eight thousand, one hundred one".