20346665402413 has 6 divisors (see below), whose sum is σ = 23668569957966. Its totient is φ = 17439998916312.

The previous prime is 20346665402407. The next prime is 20346665402449. The reversal of 20346665402413 is 31420456664302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20242683660969 + 103981741444 = 4499187^2 + 322462^2 .

It is not a de Polignac number, because 20346665402413 - 2⁵ = 20346665402381 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 (20346665402213) 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 5 ways as a sum of consecutive naturals, for example, 207619034670 + ... + 207619034767.

It is an arithmetic number, because the mean of its divisors is an integer number (3944761659661).

Almost surely, 2^{20346665402413} is an apocalyptic number.

It is an amenable number.

20346665402413 is a deficient number, since it is larger than the sum of its proper divisors (3321904555553).

20346665402413 is an equidigital number, since it uses as much as digits as its factorization.

20346665402413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415238069451 (or 415238069444 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 46.

The spelling of 20346665402413 in words is "twenty trillion, three hundred forty-six billion, six hundred sixty-five million, four hundred two thousand, four hundred thirteen".