141787643209 has 3 divisors (see below), whose sum is σ = 141788019757. Its totient is φ = 141787266662.

The previous prime is 141787643177. The next prime is 141787643219. The reversal of 141787643209 is 902346787141.

It is a happy number.

The square root of 141787643209 is 376547.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 141787643209 - 2⁵ = 141787643177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141787643219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 188274 + ... + 564820.

Almost surely, 2^141787643209 is an apocalyptic number.

141787643209 is the 376547-th square number.

141787643209 is the 188274-th centered octagonal number.

It is an amenable number.

141787643209 is a deficient number, since it is larger than the sum of its proper divisors (376548).

141787643209 is an frugal number, since it uses more digits than its factorization.

141787643209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753094 (or 376547 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

It can be divided in two parts, 141787 and 643209, that added together give a square (784996 = 886²).

The spelling of 141787643209 in words is "one hundred forty-one billion, seven hundred eighty-seven million, six hundred forty-three thousand, two hundred nine".