1264353800028 has 48 divisors (see below), whose sum is σ = 3279078827136. Its totient is φ = 375908503360.

The previous prime is 1264353800011. The next prime is 1264353800051. The reversal of 1264353800028 is 8200083534621.

It is a super-3 number, since 3×1264353800028³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90355626 + ... + 90369617.

It is an arithmetic number, because the mean of its divisors is an integer number (68314142232).

Almost surely, 2^{1264353800028} is an apocalyptic number.

It is an amenable number.

1264353800028 is an abundant number, since it is smaller than the sum of its proper divisors (2014725027108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264353800028 is a wasteful number, since it uses less digits than its factorization.

1264353800028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180725314 (or 180725312 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 1264353800028 in words is "one trillion, two hundred sixty-four billion, three hundred fifty-three million, eight hundred thousand, twenty-eight".