1278688283471 has 4 divisors (see below), whose sum is σ = 1284422311872. Its totient is φ = 1272954255072.

The previous prime is 1278688283459. The next prime is 1278688283507. The reversal of 1278688283471 is 1743828868721.

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

It is a cyclic number.

It is not a de Polignac number, because 1278688283471 - 2⁶ = 1278688283407 is a prime.

It is a super-3 number, since 3×1278688283471³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1278688283398 and 1278688283407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278688289471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2867013866 + ... + 2867014311.

It is an arithmetic number, because the mean of its divisors is an integer number (321105577968).

Almost surely, 2^{1278688283471} is an apocalyptic number.

1278688283471 is a deficient number, since it is larger than the sum of its proper divisors (5734028401).

1278688283471 is an equidigital number, since it uses as much as digits as its factorization.

1278688283471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734028400.

The product of its digits is 57802752, while the sum is 65.

The spelling of 1278688283471 in words is "one trillion, two hundred seventy-eight billion, six hundred eighty-eight million, two hundred eighty-three thousand, four hundred seventy-one".