20120855143 has 2 divisors, whose sum is σ = 20120855144. Its totient is φ = 20120855142.

The previous prime is 20120855077. The next prime is 20120855149. The reversal of 20120855143 is 34155802102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120855143 - 2³³ = 11530920551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120855149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060427571 + 10060427572.

It is an arithmetic number, because the mean of its divisors is an integer number (10060427572).

Almost surely, 2^20120855143 is an apocalyptic number.

20120855143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120855143 is an equidigital number, since it uses as much as digits as its factorization.

20120855143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 20120855143 in words is "twenty billion, one hundred twenty million, eight hundred fifty-five thousand, one hundred forty-three".