1288042771228 has 24 divisors (see below), whose sum is σ = 2256152698800. Its totient is φ = 643427920128.

The previous prime is 1288042771207. The next prime is 1288042771231. The reversal of 1288042771228 is 8221772408821.

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, 28608951 + ... + 28653937.

It is an arithmetic number, because the mean of its divisors is an integer number (94006362450).

Almost surely, 2^{1288042771228} is an apocalyptic number.

It is an amenable number.

1288042771228 is a deficient number, since it is larger than the sum of its proper divisors (968109927572).

1288042771228 is a wasteful number, since it uses less digits than its factorization.

1288042771228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51429 (or 51427 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 52.

The spelling of 1288042771228 in words is "one trillion, two hundred eighty-eight billion, forty-two million, seven hundred seventy-one thousand, two hundred twenty-eight".