141156566821 has 2 divisors, whose sum is σ = 141156566822. Its totient is φ = 141156566820.

The previous prime is 141156566779. The next prime is 141156566861. The reversal of 141156566821 is 128665651141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96199845921 + 44956720900 = 310161^2 + 212030^2 .

It is a cyclic number.

It is not a de Polignac number, because 141156566821 - 2²¹ = 141154469669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141156566861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70578283410 + 70578283411.

It is an arithmetic number, because the mean of its divisors is an integer number (70578283411).

Almost surely, 2^141156566821 is an apocalyptic number.

It is an amenable number.

141156566821 is a deficient number, since it is larger than the sum of its proper divisors (1).

141156566821 is an equidigital number, since it uses as much as digits as its factorization.

141156566821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 46.

The spelling of 141156566821 in words is "one hundred forty-one billion, one hundred fifty-six million, five hundred sixty-six thousand, eight hundred twenty-one".