2163523564541 has 2 divisors, whose sum is σ = 2163523564542. Its totient is φ = 2163523564540.

The previous prime is 2163523564523. The next prime is 2163523564603. The reversal of 2163523564541 is 1454653253612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1653163348516 + 510360216025 = 1285754^2 + 714395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2163523564541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163523564841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081761782270 + 1081761782271.

It is an arithmetic number, because the mean of its divisors is an integer number (1081761782271).

Almost surely, 2^{2163523564541} is an apocalyptic number.

It is an amenable number.

2163523564541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163523564541 is an equidigital number, since it uses as much as digits as its factorization.

2163523564541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 47.

The spelling of 2163523564541 in words is "two trillion, one hundred sixty-three billion, five hundred twenty-three million, five hundred sixty-four thousand, five hundred forty-one".