1273975385363 has 16 divisors (see below), whose sum is σ = 1337980649472. Its totient is φ = 1211442804000.

The previous prime is 1273975385357. The next prime is 1273975385393. The reversal of 1273975385363 is 3635835793721.

It is a cyclic number.

It is not a de Polignac number, because 1273975385363 - 2²⁰ = 1273974336787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1273975385296 and 1273975385305.

It is not an unprimeable number, because it can be changed into a prime (1273975385303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1534070 + ... + 2213892.

It is an arithmetic number, because the mean of its divisors is an integer number (83623790592).

Almost surely, 2^{1273975385363} is an apocalyptic number.

1273975385363 is a deficient number, since it is larger than the sum of its proper divisors (64005264109).

1273975385363 is an equidigital number, since it uses as much as digits as its factorization.

1273975385363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680906.

The product of its digits is 85730400, while the sum is 62.

The spelling of 1273975385363 in words is "one trillion, two hundred seventy-three billion, nine hundred seventy-five million, three hundred eighty-five thousand, three hundred sixty-three".