2343840644641 has 4 divisors (see below), whose sum is σ = 2343843919872. Its totient is φ = 2343837369412.

The previous prime is 2343840644633. The next prime is 2343840644693. The reversal of 2343840644641 is 1464460483432.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2343840644641 - 2³ = 2343840644633 is a prime.

It is a super-3 number, since 3×2343840644641³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2343840644611) 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, 53185 + ... + 2165758.

It is an arithmetic number, because the mean of its divisors is an integer number (585960979968).

Almost surely, 2^{2343840644641} is an apocalyptic number.

It is an amenable number.

2343840644641 is a deficient number, since it is larger than the sum of its proper divisors (3275231).

2343840644641 is a wasteful number, since it uses less digits than its factorization.

2343840644641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275230.

The product of its (nonzero) digits is 5308416, while the sum is 49.

The spelling of 2343840644641 in words is "two trillion, three hundred forty-three billion, eight hundred forty million, six hundred forty-four thousand, six hundred forty-one".