2028266787393 has 144 divisors (see below), whose sum is σ = 3895461897600. Its totient is φ = 992662387200.

The previous prime is 2028266787389. The next prime is 2028266787413. The reversal of 2028266787393 is 3937876628202.

It is a happy number.

2028266787393 is a `hidden beast` number, since 202 + 8 + 266 + 7 + 87 + 3 + 93 = 666.

It is not a de Polignac number, because 2028266787393 - 2² = 2028266787389 is a prime.

It is a super-2 number, since 2×2028266787393² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 2028266787393.

It is not an unprimeable number, because it can be changed into a prime (2028266787353) 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 143 ways as a sum of consecutive naturals, for example, 26176813 + ... + 26254181.

Almost surely, 2^{2028266787393} is an apocalyptic number.

It is an amenable number.

2028266787393 is a deficient number, since it is larger than the sum of its proper divisors (1867195110207).

2028266787393 is a wasteful number, since it uses less digits than its factorization.

2028266787393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77604 (or 77590 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 2028266787393 in words is "two trillion, twenty-eight billion, two hundred sixty-six million, seven hundred eighty-seven thousand, three hundred ninety-three".