1278623053418 has 16 divisors (see below), whose sum is σ = 1964034864000. Its totient is φ = 624126620832.

The previous prime is 1278623053361. The next prime is 1278623053423. The reversal of 1278623053418 is 8143503268721.

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, 45449708 + ... + 45477831.

It is an arithmetic number, because the mean of its divisors is an integer number (122752179000).

Almost surely, 2^{1278623053418} is an apocalyptic number.

1278623053418 is a deficient number, since it is larger than the sum of its proper divisors (685411810582).

1278623053418 is an equidigital number, since it uses as much as digits as its factorization.

1278623053418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90927709.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 1278623053418 in words is "one trillion, two hundred seventy-eight billion, six hundred twenty-three million, fifty-three thousand, four hundred eighteen".