141981784969 has 2 divisors, whose sum is σ = 141981784970. Its totient is φ = 141981784968.

The previous prime is 141981784939. The next prime is 141981785059. The reversal of 141981784969 is 969487189141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135728138569 + 6253646400 = 368413^2 + 79080^2 .

It is a cyclic number.

It is not a de Polignac number, because 141981784969 - 2¹³ = 141981776777 is a prime.

It is a super-2 number, since 2×141981784969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (141981784939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70990892484 + 70990892485.

It is an arithmetic number, because the mean of its divisors is an integer number (70990892485).

Almost surely, 2^141981784969 is an apocalyptic number.

It is an amenable number.

141981784969 is a deficient number, since it is larger than the sum of its proper divisors (1).

141981784969 is an equidigital number, since it uses as much as digits as its factorization.

141981784969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 67.

The spelling of 141981784969 in words is "one hundred forty-one billion, nine hundred eighty-one million, seven hundred eighty-four thousand, nine hundred sixty-nine".