1261453544223 has 8 divisors (see below), whose sum is σ = 1685822444208. Its totient is φ = 839026836864.

The previous prime is 1261453544207. The next prime is 1261453544227. The reversal of 1261453544223 is 3224453541621.

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

It is not a de Polignac number, because 1261453544223 - 2⁴ = 1261453544207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261453544227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485546640 + ... + 485549237.

It is an arithmetic number, because the mean of its divisors is an integer number (210727805526).

Almost surely, 2^{1261453544223} is an apocalyptic number.

1261453544223 is a deficient number, since it is larger than the sum of its proper divisors (424368899985).

1261453544223 is an equidigital number, since it uses as much as digits as its factorization.

1261453544223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971096313.

The product of its digits is 691200, while the sum is 42.

The spelling of 1261453544223 in words is "one trillion, two hundred sixty-one billion, four hundred fifty-three million, five hundred forty-four thousand, two hundred twenty-three".