5143618561 has 2 divisors, whose sum is σ = 5143618562. Its totient is φ = 5143618560.

The previous prime is 5143618541. The next prime is 5143618577. The reversal of 5143618561 is 1658163415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5143614961 + 3600 = 71719^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 5143618561 - 2¹³ = 5143610369 is a prime.

It is not a weakly prime, because it can be changed into another prime (5143618541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571809280 + 2571809281.

It is an arithmetic number, because the mean of its divisors is an integer number (2571809281).

Almost surely, 2^5143618561 is an apocalyptic number.

It is an amenable number.

5143618561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5143618561 is an equidigital number, since it uses as much as digits as its factorization.

5143618561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 5143618561 is about 71719.0250979473. The cubic root of 5143618561 is about 1726.1939292872.

The spelling of 5143618561 in words is "five billion, one hundred forty-three million, six hundred eighteen thousand, five hundred sixty-one".