1278116634333 has 64 divisors (see below), whose sum is σ = 2138490519552. Its totient is φ = 659644231680.

The previous prime is 1278116634331. The next prime is 1278116634367. The reversal of 1278116634333 is 3334366118721.

It is not a de Polignac number, because 1278116634333 - 2¹ = 1278116634331 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278116634331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34444116 + ... + 34481202.

It is an arithmetic number, because the mean of its divisors is an integer number (33413914368).

Almost surely, 2^{1278116634333} is an apocalyptic number.

It is an amenable number.

1278116634333 is a deficient number, since it is larger than the sum of its proper divisors (860373885219).

1278116634333 is a wasteful number, since it uses less digits than its factorization.

1278116634333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38074.

The product of its digits is 1306368, while the sum is 48.

The spelling of 1278116634333 in words is "one trillion, two hundred seventy-eight billion, one hundred sixteen million, six hundred thirty-four thousand, three hundred thirty-three".