6778345673453 has 8 divisors (see below), whose sum is σ = 6784623825408. Its totient is φ = 6772070045104.

The previous prime is 6778345673443. The next prime is 6778345673467. The reversal of 6778345673453 is 3543765438776.

It is a happy number.

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 6778345673453 - 2¹⁸ = 6778345411309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778345673423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4764875 + ... + 6021687.

It is an arithmetic number, because the mean of its divisors is an integer number (848077978176).

Almost surely, 2^{6778345673453} is an apocalyptic number.

It is an amenable number.

6778345673453 is a deficient number, since it is larger than the sum of its proper divisors (6278151955).

6778345673453 is a wasteful number, since it uses less digits than its factorization.

6778345673453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261803.

The product of its digits is 1066867200, while the sum is 68.

The spelling of 6778345673453 in words is "six trillion, seven hundred seventy-eight billion, three hundred forty-five million, six hundred seventy-three thousand, four hundred fifty-three".