1278782932928 has 14 divisors (see below), whose sum is σ = 2537584882656. Its totient is φ = 639391466432.

The previous prime is 1278782932913. The next prime is 1278782932949. The reversal of 1278782932928 is 8292392878721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9990491600 + ... + 9990491727.

Almost surely, 2^{1278782932928} is an apocalyptic number.

It is an amenable number.

1278782932928 is a deficient number, since it is larger than the sum of its proper divisors (1258801949728).

1278782932928 is an equidigital number, since it uses as much as digits as its factorization.

1278782932928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19980983339 (or 19980983329 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 68.

The spelling of 1278782932928 in words is "one trillion, two hundred seventy-eight billion, seven hundred eighty-two million, nine hundred thirty-two thousand, nine hundred twenty-eight".