2342403345521 has 16 divisors (see below), whose sum is σ = 2419700532480. Its totient is φ = 2266417393680.

The previous prime is 2342403345511. The next prime is 2342403345523. The reversal of 2342403345521 is 1255433042432.

It is a cyclic number.

It is not a de Polignac number, because 2342403345521 - 2²² = 2342399151217 is a prime.

It is a super-2 number, since 2×2342403345521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2342403345523) 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 15 ways as a sum of consecutive naturals, for example, 4442606 + ... + 4941816.

It is an arithmetic number, because the mean of its divisors is an integer number (151231283280).

Almost surely, 2^{2342403345521} is an apocalyptic number.

It is an amenable number.

2342403345521 is a deficient number, since it is larger than the sum of its proper divisors (77297186959).

2342403345521 is a wasteful number, since it uses less digits than its factorization.

2342403345521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500524.

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 2342403345521 its reverse (1255433042432), we get a palindrome (3597836387953).

The spelling of 2342403345521 in words is "two trillion, three hundred forty-two billion, four hundred three million, three hundred forty-five thousand, five hundred twenty-one".