67656633665675 has 12 divisors (see below), whose sum is σ = 84047597290296. Its totient is φ = 54026357548800.

The previous prime is 67656633665629. The next prime is 67656633665693. The reversal of 67656633665675 is 57656633665676.

It is not a de Polignac number, because 67656633665675 - 2¹⁴ = 67656633649291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67656633665596 and 67656633665605.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2473720646 + ... + 2473747995.

It is an arithmetic number, because the mean of its divisors is an integer number (7003966440858).

Almost surely, 2^{67656633665675} is an apocalyptic number.

67656633665675 is a deficient number, since it is larger than the sum of its proper divisors (16390963624621).

67656633665675 is a wasteful number, since it uses less digits than its factorization.

67656633665675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947469198 (or 4947469193 counting only the distinct ones).

The product of its digits is 15431472000, while the sum is 77.

Subtracting from 67656633665675 its reverse (57656633665676), we obtain a palindrome (9999999999999).

The spelling of 67656633665675 in words is "sixty-seven trillion, six hundred fifty-six billion, six hundred thirty-three million, six hundred sixty-five thousand, six hundred seventy-five".