1278688283472 has 80 divisors (see below), whose sum is σ = 3321641651328. Its totient is φ = 423865989120.

The previous prime is 1278688283459. The next prime is 1278688283507. The reversal of 1278688283472 is 2743828868721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6690228 + ... + 6878700.

Almost surely, 2^{1278688283472} is an apocalyptic number.

1278688283472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1278688283472 is an abundant number, since it is smaller than the sum of its proper divisors (2042953367856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1278688283472 is a wasteful number, since it uses less digits than its factorization.

1278688283472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189268 (or 189262 counting only the distinct ones).

The product of its digits is 115605504, while the sum is 66.

The spelling of 1278688283472 in words is "one trillion, two hundred seventy-eight billion, six hundred eighty-eight million, two hundred eighty-three thousand, four hundred seventy-two".