143342055553661 has 2 divisors, whose sum is σ = 143342055553662. Its totient is φ = 143342055553660.

The previous prime is 143342055553577. The next prime is 143342055553673. The reversal of 143342055553661 is 166355550243341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141165147114436 + 2176908439225 = 11881294^2 + 1475435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143342055553661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143342055553691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71671027776830 + 71671027776831.

It is an arithmetic number, because the mean of its divisors is an integer number (71671027776831).

Almost surely, 2^{143342055553661} is an apocalyptic number.

It is an amenable number.

143342055553661 is a deficient number, since it is larger than the sum of its proper divisors (1).

143342055553661 is an equidigital number, since it uses as much as digits as its factorization.

143342055553661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440000, while the sum is 53.

The spelling of 143342055553661 in words is "one hundred forty-three trillion, three hundred forty-two billion, fifty-five million, five hundred fifty-three thousand, six hundred sixty-one".