1278753135338 has 48 divisors (see below), whose sum is σ = 2328502567680. Its totient is φ = 524165219424.

The previous prime is 1278753135281. The next prime is 1278753135347. The reversal of 1278753135338 is 8335313578721.

It is a super-2 number, since 2×1278753135338² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49784783 + ... + 49810461.

It is an arithmetic number, because the mean of its divisors is an integer number (48510470160).

Almost surely, 2^{1278753135338} is an apocalyptic number.

1278753135338 is a deficient number, since it is larger than the sum of its proper divisors (1049749432342).

1278753135338 is a wasteful number, since it uses less digits than its factorization.

1278753135338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47811 (or 47804 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 56.

The spelling of 1278753135338 in words is "one trillion, two hundred seventy-eight billion, seven hundred fifty-three million, one hundred thirty-five thousand, three hundred thirty-eight".