18263773121428 has 48 divisors (see below), whose sum is σ = 33412570740864. Its totient is φ = 8718790868480.

The previous prime is 18263773121413. The next prime is 18263773121431. The reversal of 18263773121428 is 82412137736281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280211283 + ... + 280276453.

It is an arithmetic number, because the mean of its divisors is an integer number (696095223768).

Almost surely, 2^{18263773121428} is an apocalyptic number.

It is an amenable number.

18263773121428 is a deficient number, since it is larger than the sum of its proper divisors (15148797619436).

18263773121428 is a wasteful number, since it uses less digits than its factorization.

18263773121428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70752 (or 70750 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 55.

The spelling of 18263773121428 in words is "eighteen trillion, two hundred sixty-three billion, seven hundred seventy-three million, one hundred twenty-one thousand, four hundred twenty-eight".