20355001254143 has 16 divisors (see below), whose sum is σ = 20867878614240. Its totient is φ = 19842910041600.

The previous prime is 20355001254113. The next prime is 20355001254199. The reversal of 20355001254143 is 34145210055302.

It is a cyclic number.

It is not a de Polignac number, because 20355001254143 - 2⁶ = 20355001254079 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 (20355001254113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416497313 + ... + 416546181.

It is an arithmetic number, because the mean of its divisors is an integer number (1304242413390).

Almost surely, 2^{20355001254143} is an apocalyptic number.

20355001254143 is a deficient number, since it is larger than the sum of its proper divisors (512877360097).

20355001254143 is a wasteful number, since it uses less digits than its factorization.

20355001254143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56698.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 20355001254143 in words is "twenty trillion, three hundred fifty-five billion, one million, two hundred fifty-four thousand, one hundred forty-three".