20555485000143 has 16 divisors (see below), whose sum is σ = 29021324126976. Its totient is φ = 12896752152960.

The previous prime is 20555485000123. The next prime is 20555485000159. The reversal of 20555485000143 is 34100058455502.

It is not a de Polignac number, because 20555485000143 - 2¹² = 20555484996047 is a prime.

It is a super-2 number, since 2×20555485000143² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20555485000095 and 20555485000104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20555485000123) 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, 11786821 + ... + 13417902.

It is an arithmetic number, because the mean of its divisors is an integer number (1813832757936).

Almost surely, 2^{20555485000143} is an apocalyptic number.

20555485000143 is a deficient number, since it is larger than the sum of its proper divisors (8465839126833).

20555485000143 is a wasteful number, since it uses less digits than its factorization.

20555485000143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25220734.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 20555485000143 in words is "twenty trillion, five hundred fifty-five billion, four hundred eighty-five million, one hundred forty-three", and thus it is an aban number.