141709436509 has 4 divisors (see below), whose sum is σ = 144383199516. Its totient is φ = 139035673504.

The previous prime is 141709436503. The next prime is 141709436521. The reversal of 141709436509 is 905634907141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 905634907141 = 166861 ⋅5427481.

It can be written as a sum of positive squares in 2 ways, for example, as 121519868409 + 20189568100 = 348597^2 + 142090^2 .

It is a cyclic number.

It is not a de Polignac number, because 141709436509 - 2³³ = 133119501917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141709436503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336881424 + ... + 1336881529.

It is an arithmetic number, because the mean of its divisors is an integer number (36095799879).

Almost surely, 2^141709436509 is an apocalyptic number.

It is an amenable number.

141709436509 is a deficient number, since it is larger than the sum of its proper divisors (2673763007).

141709436509 is an equidigital number, since it uses as much as digits as its factorization.

141709436509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673763006.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 141709436509 in words is "one hundred forty-one billion, seven hundred nine million, four hundred thirty-six thousand, five hundred nine".