1288787078124 has 144 divisors (see below), whose sum is σ = 4183888730112. Its totient is φ = 325121613696.

The previous prime is 1288787078087. The next prime is 1288787078129. The reversal of 1288787078124 is 4218707878821.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1288787078129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8476884 + ... + 8627579.

It is an arithmetic number, because the mean of its divisors is an integer number (29054782848).

Almost surely, 2^{1288787078124} is an apocalyptic number.

1288787078124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1288787078124 is an abundant number, since it is smaller than the sum of its proper divisors (2895101651988).

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

1288787078124 is a wasteful number, since it uses less digits than its factorization.

1288787078124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104516 (or 17104511 counting only the distinct ones).

The product of its (nonzero) digits is 22478848, while the sum is 63.

The spelling of 1288787078124 in words is "one trillion, two hundred eighty-eight billion, seven hundred eighty-seven million, seventy-eight thousand, one hundred twenty-four".