20154430055401 has 4 divisors (see below), whose sum is σ = 20623137731152. Its totient is φ = 19685722379652.

The previous prime is 20154430055399. The next prime is 20154430055483. The reversal of 20154430055401 is 10455003445102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20154430055401 - 2¹ = 20154430055399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20154430055701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234353837811 + ... + 234353837896.

It is an arithmetic number, because the mean of its divisors is an integer number (5155784432788).

Almost surely, 2^{20154430055401} is an apocalyptic number.

It is an amenable number.

20154430055401 is a deficient number, since it is larger than the sum of its proper divisors (468707675751).

20154430055401 is an equidigital number, since it uses as much as digits as its factorization.

20154430055401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468707675750.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 20154430055401 in words is "twenty trillion, one hundred fifty-four billion, four hundred thirty million, fifty-five thousand, four hundred one".