1273919985073 has 16 divisors (see below), whose sum is σ = 1347935688000. Its totient is φ = 1200602475072.

The previous prime is 1273919985061. The next prime is 1273919985113. The reversal of 1273919985073 is 3705899193721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1273919985073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1273919984996 and 1273919985014.

It is not an unprimeable number, because it can be changed into a prime (1273919185073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44561098 + ... + 44589676.

It is an arithmetic number, because the mean of its divisors is an integer number (84245980500).

Almost surely, 2^{1273919985073} is an apocalyptic number.

It is an amenable number.

1273919985073 is a deficient number, since it is larger than the sum of its proper divisors (74015702927).

1273919985073 is a wasteful number, since it uses less digits than its factorization.

1273919985073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40704.

The product of its (nonzero) digits is 25719120, while the sum is 64.

The spelling of 1273919985073 in words is "one trillion, two hundred seventy-three billion, nine hundred nineteen million, nine hundred eighty-five thousand, seventy-three".