6645420053027 has 8 divisors (see below), whose sum is σ = 7594801184256. Its totient is φ = 5696047774152.

The previous prime is 6645420053011. The next prime is 6645420053039. The reversal of 6645420053027 is 7203500245466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6645420053027 - 2⁴ = 6645420053011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6645420053087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517883 + ... + 3682260.

It is an arithmetic number, because the mean of its divisors is an integer number (949350148032).

Almost surely, 2^{6645420053027} is an apocalyptic number.

6645420053027 is a deficient number, since it is larger than the sum of its proper divisors (949381131229).

6645420053027 is a wasteful number, since it uses less digits than its factorization.

6645420053027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426177.

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 6645420053027 in words is "six trillion, six hundred forty-five billion, four hundred twenty million, fifty-three thousand, twenty-seven".