1273351452137 has 4 divisors (see below), whose sum is σ = 1281163424400. Its totient is φ = 1265539479876.

The previous prime is 1273351452119. The next prime is 1273351452157. The reversal of 1273351452137 is 7312541533721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1273351452137 - 2¹² = 1273351448041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273351452157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3905985887 + ... + 3905986212.

It is an arithmetic number, because the mean of its divisors is an integer number (320290856100).

Almost surely, 2^{1273351452137} is an apocalyptic number.

It is an amenable number.

1273351452137 is a deficient number, since it is larger than the sum of its proper divisors (7811972263).

1273351452137 is an equidigital number, since it uses as much as digits as its factorization.

1273351452137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811972262.

The product of its digits is 529200, while the sum is 44.

Adding to 1273351452137 its reverse (7312541533721), we get a palindrome (8585892985858).

The spelling of 1273351452137 in words is "one trillion, two hundred seventy-three billion, three hundred fifty-one million, four hundred fifty-two thousand, one hundred thirty-seven".