1218678583773 has 16 divisors (see below), whose sum is σ = 1880540794880. Its totient is φ = 687572726256.

The previous prime is 1218678583747. The next prime is 1218678583807. The reversal of 1218678583773 is 3773858768121.

It is not a de Polignac number, because 1218678583773 - 2⁵ = 1218678583741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218678588773) 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, 367291465 + ... + 367294782.

It is an arithmetic number, because the mean of its divisors is an integer number (117533799680).

Almost surely, 2^{1218678583773} is an apocalyptic number.

It is an amenable number.

1218678583773 is a deficient number, since it is larger than the sum of its proper divisors (661862211107).

1218678583773 is an equidigital number, since it uses as much as digits as its factorization.

1218678583773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734586336.

The product of its digits is 94832640, while the sum is 66.

The spelling of 1218678583773 in words is "one trillion, two hundred eighteen billion, six hundred seventy-eight million, five hundred eighty-three thousand, seven hundred seventy-three".