2688542705078 has 4 divisors (see below), whose sum is σ = 4032814057620. Its totient is φ = 1344271352538.

The previous prime is 2688542705033. The next prime is 2688542705081. The reversal of 2688542705078 is 8705072458862.

2688542705078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2688542705078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672135676268 + ... + 672135676271.

It is an arithmetic number, because the mean of its divisors is an integer number (1008203514405).

Almost surely, 2^{2688542705078} is an apocalyptic number.

2688542705078 is a deficient number, since it is larger than the sum of its proper divisors (1344271352542).

2688542705078 is a wasteful number, since it uses less digits than its factorization.

2688542705078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344271352541.

The product of its (nonzero) digits is 60211200, while the sum is 62.

The spelling of 2688542705078 in words is "two trillion, six hundred eighty-eight billion, five hundred forty-two million, seven hundred five thousand, seventy-eight".