1287449063948 has 24 divisors (see below), whose sum is σ = 2258068909824. Its totient is φ = 642286774800.

The previous prime is 1287449063947. The next prime is 1287449063963. The reversal of 1287449063948 is 8493609447821.

It is not an unprimeable number, because it can be changed into a prime (1287449063941) 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 7 ways as a sum of consecutive naturals, for example, 25811393 + ... + 25861223.

It is an arithmetic number, because the mean of its divisors is an integer number (94086204576).

Almost surely, 2^{1287449063948} is an apocalyptic number.

It is an amenable number.

1287449063948 is a deficient number, since it is larger than the sum of its proper divisors (970619845876).

1287449063948 is a wasteful number, since it uses less digits than its factorization.

1287449063948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64133 (or 64131 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 1287449063948 in words is "one trillion, two hundred eighty-seven billion, four hundred forty-nine million, sixty-three thousand, nine hundred forty-eight".