2143202545501 has 2 divisors, whose sum is σ = 2143202545502. Its totient is φ = 2143202545500.

The previous prime is 2143202545469. The next prime is 2143202545529. The reversal of 2143202545501 is 1055452023412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1538408586276 + 604793959225 = 1240326^2 + 777685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143202545501 - 2⁵ = 2143202545469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143202545531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071601272750 + 1071601272751.

It is an arithmetic number, because the mean of its divisors is an integer number (1071601272751).

Almost surely, 2^{2143202545501} is an apocalyptic number.

It is an amenable number.

2143202545501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143202545501 is an equidigital number, since it uses as much as digits as its factorization.

2143202545501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 2143202545501 its reverse (1055452023412), we get a palindrome (3198654568913).

The spelling of 2143202545501 in words is "two trillion, one hundred forty-three billion, two hundred two million, five hundred forty-five thousand, five hundred one".