6645420053039 has 2 divisors, whose sum is σ = 6645420053040. Its totient is φ = 6645420053038.

The previous prime is 6645420053011. The next prime is 6645420053087. The reversal of 6645420053039 is 9303500245466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6645420053039 - 2²⁰ = 6645419004463 is a prime.

It is a super-3 number, since 3×6645420053039³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6645420052984 and 6645420053002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6645420013039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322710026519 + 3322710026520.

It is an arithmetic number, because the mean of its divisors is an integer number (3322710026520).

Almost surely, 2^{6645420053039} is an apocalyptic number.

6645420053039 is a deficient number, since it is larger than the sum of its proper divisors (1).

6645420053039 is an equidigital number, since it uses as much as digits as its factorization.

6645420053039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 6645420053039 in words is "six trillion, six hundred forty-five billion, four hundred twenty million, fifty-three thousand, thirty-nine".