13420646347 has 2 divisors, whose sum is σ = 13420646348. Its totient is φ = 13420646346.

The previous prime is 13420646299. The next prime is 13420646353. The reversal of 13420646347 is 74364602431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13420646347 - 2²³ = 13412257739 is a prime.

It is a super-2 number, since 2×13420646347² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13420646357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710323173 + 6710323174.

It is an arithmetic number, because the mean of its divisors is an integer number (6710323174).

Almost surely, 2^13420646347 is an apocalyptic number.

13420646347 is a deficient number, since it is larger than the sum of its proper divisors (1).

13420646347 is an equidigital number, since it uses as much as digits as its factorization.

13420646347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 13420646347 in words is "thirteen billion, four hundred twenty million, six hundred forty-six thousand, three hundred forty-seven".