20145520141 has 2 divisors, whose sum is σ = 20145520142. Its totient is φ = 20145520140.

The previous prime is 20145520139. The next prime is 20145520147. The reversal of 20145520141 is 14102554102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18544720041 + 1600800100 = 136179^2 + 40010^2 .

It is a cyclic number.

It is not a de Polignac number, because 20145520141 - 2¹ = 20145520139 is a prime.

Together with 20145520139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20145520147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072760070 + 10072760071.

It is an arithmetic number, because the mean of its divisors is an integer number (10072760071).

Almost surely, 2^20145520141 is an apocalyptic number.

It is an amenable number.

20145520141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145520141 is an equidigital number, since it uses as much as digits as its factorization.

20145520141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 20145520141 in words is "twenty billion, one hundred forty-five million, five hundred twenty thousand, one hundred forty-one".