1273148660123 has 4 divisors (see below), whose sum is σ = 1340156484360. Its totient is φ = 1206140835888.

The previous prime is 1273148660093. The next prime is 1273148660141. The reversal of 1273148660123 is 3210668413721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1273148660123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273148660153) 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, 33503912090 + ... + 33503912127.

It is an arithmetic number, because the mean of its divisors is an integer number (335039121090).

Almost surely, 2^{1273148660123} is an apocalyptic number.

1273148660123 is a deficient number, since it is larger than the sum of its proper divisors (67007824237).

1273148660123 is an equidigital number, since it uses as much as digits as its factorization.

1273148660123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67007824236.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 1273148660123 in words is "one trillion, two hundred seventy-three billion, one hundred forty-eight million, six hundred sixty thousand, one hundred twenty-three".