1279834145823 has 32 divisors (see below), whose sum is σ = 1830070307520. Its totient is φ = 792766586880.

The previous prime is 1279834145773. The next prime is 1279834145831. The reversal of 1279834145823 is 3285414389721.

It is not a de Polignac number, because 1279834145823 - 2¹² = 1279834141727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279834149823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 758643 + ... + 1770651.

It is an arithmetic number, because the mean of its divisors is an integer number (57189697110).

Almost surely, 2^{1279834145823} is an apocalyptic number.

1279834145823 is a deficient number, since it is larger than the sum of its proper divisors (550236161697).

1279834145823 is a wasteful number, since it uses less digits than its factorization.

1279834145823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012347.

The product of its digits is 11612160, while the sum is 57.

The spelling of 1279834145823 in words is "one trillion, two hundred seventy-nine billion, eight hundred thirty-four million, one hundred forty-five thousand, eight hundred twenty-three".