343643136541 has 4 divisors (see below), whose sum is σ = 355492899900. Its totient is φ = 331793373184.

The previous prime is 343643136527. The next prime is 343643136581. The reversal of 343643136541 is 145631346343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145631346343 = 7 ⋅20804478049.

It can be written as a sum of positive squares in 2 ways, for example, as 281669025625 + 61974110916 = 530725^2 + 248946^2 .

It is a cyclic number.

It is not a de Polignac number, because 343643136541 - 2⁵ = 343643136509 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 (343643136581) 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, 5924881636 + ... + 5924881693.

It is an arithmetic number, because the mean of its divisors is an integer number (88873224975).

Almost surely, 2^343643136541 is an apocalyptic number.

It is an amenable number.

343643136541 is a deficient number, since it is larger than the sum of its proper divisors (11849763359).

343643136541 is a wasteful number, since it uses less digits than its factorization.

343643136541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11849763358.

The product of its digits is 933120, while the sum is 43.

The spelling of 343643136541 in words is "three hundred forty-three billion, six hundred forty-three million, one hundred thirty-six thousand, five hundred forty-one".