1273431655126 has 8 divisors (see below), whose sum is σ = 1911218799024. Its totient is φ = 636358722120.

The previous prime is 1273431655043. The next prime is 1273431655141. The reversal of 1273431655126 is 6215561343721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178548265 + ... + 178555396.

It is an arithmetic number, because the mean of its divisors is an integer number (238902349878).

Almost surely, 2^{1273431655126} is an apocalyptic number.

1273431655126 is a deficient number, since it is larger than the sum of its proper divisors (637787143898).

1273431655126 is a wasteful number, since it uses less digits than its factorization.

1273431655126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357105446.

The product of its digits is 907200, while the sum is 46.

Adding to 1273431655126 its reverse (6215561343721), we get a palindrome (7488992998847).

The spelling of 1273431655126 in words is "one trillion, two hundred seventy-three billion, four hundred thirty-one million, six hundred fifty-five thousand, one hundred twenty-six".