143123556216461 has 2 divisors, whose sum is σ = 143123556216462. Its totient is φ = 143123556216460.

The previous prime is 143123556216449. The next prime is 143123556216577. The reversal of 143123556216461 is 164612655321341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143123059194025 + 497022436 = 11963405^2 + 22294^2 .

It is a cyclic number.

It is not a de Polignac number, because 143123556216461 - 2⁶ = 143123556216397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143123556216401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71561778108230 + 71561778108231.

It is an arithmetic number, because the mean of its divisors is an integer number (71561778108231).

Almost surely, 2^{143123556216461} is an apocalyptic number.

It is an amenable number.

143123556216461 is a deficient number, since it is larger than the sum of its proper divisors (1).

143123556216461 is an equidigital number, since it uses as much as digits as its factorization.

143123556216461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 50.

The spelling of 143123556216461 in words is "one hundred forty-three trillion, one hundred twenty-three billion, five hundred fifty-six million, two hundred sixteen thousand, four hundred sixty-one".