1278741480478 has 16 divisors (see below), whose sum is σ = 2391412639104. Its totient is φ = 498210966360.

The previous prime is 1278741480451. The next prime is 1278741480503. The reversal of 1278741480478 is 8740841478721.

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, 4151757900 + ... + 4151758207.

It is an arithmetic number, because the mean of its divisors is an integer number (149463289944).

Almost surely, 2^{1278741480478} is an apocalyptic number.

1278741480478 is a deficient number, since it is larger than the sum of its proper divisors (1112671158626).

1278741480478 is a wasteful number, since it uses less digits than its factorization.

1278741480478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303516127.

The product of its (nonzero) digits is 22478848, while the sum is 61.

The spelling of 1278741480478 in words is "one trillion, two hundred seventy-eight billion, seven hundred forty-one million, four hundred eighty thousand, four hundred seventy-eight".