20506361342143 has 8 divisors (see below), whose sum is σ = 20857459910400. Its totient is φ = 20155380544728.

The previous prime is 20506361342101. The next prime is 20506361342147. The reversal of 20506361342143 is 34124316360502.

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 20506361342143 - 2¹⁷ = 20506361211071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20506361342096 and 20506361342105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20506361342147) 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, 29091453 + ... + 29788006.

It is an arithmetic number, because the mean of its divisors is an integer number (2607182488800).

Almost surely, 2^{20506361342143} is an apocalyptic number.

20506361342143 is a deficient number, since it is larger than the sum of its proper divisors (351098568257).

20506361342143 is an equidigital number, since it uses as much as digits as its factorization.

20506361342143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58885421.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 20506361342143 in words is "twenty trillion, five hundred six billion, three hundred sixty-one million, three hundred forty-two thousand, one hundred forty-three".