6666010510639 has 2 divisors, whose sum is σ = 6666010510640. Its totient is φ = 6666010510638.

The previous prime is 6666010510637. The next prime is 6666010510667. The reversal of 6666010510639 is 9360150106666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6666010510639 - 2¹ = 6666010510637 is a prime.

It is a super-2 number, since 2×6666010510639² (a number of 26 digits) contains 22 as substring.

Together with 6666010510637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6666010510592 and 6666010510601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6666010510631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333005255319 + 3333005255320.

It is an arithmetic number, because the mean of its divisors is an integer number (3333005255320).

Almost surely, 2^{6666010510639} is an apocalyptic number.

6666010510639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666010510639 is an equidigital number, since it uses as much as digits as its factorization.

6666010510639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 6666010510639 in words is "six trillion, six hundred sixty-six billion, ten million, five hundred ten thousand, six hundred thirty-nine".