2678545630655 has 8 divisors (see below), whose sum is σ = 3245461114272. Its totient is φ = 2122032266208.

The previous prime is 2678545630639. The next prime is 2678545630681. The reversal of 2678545630655 is 5560365458762.

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 2678545630655 - 2⁴ = 2678545630639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600529224 + ... + 2600530253.

It is an arithmetic number, because the mean of its divisors is an integer number (405682639284).

Almost surely, 2^{2678545630655} is an apocalyptic number.

2678545630655 is a deficient number, since it is larger than the sum of its proper divisors (566915483617).

2678545630655 is a wasteful number, since it uses less digits than its factorization.

2678545630655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201059585.

The product of its (nonzero) digits is 181440000, while the sum is 62.

The spelling of 2678545630655 in words is "two trillion, six hundred seventy-eight billion, five hundred forty-five million, six hundred thirty thousand, six hundred fifty-five".