1280164255000 has 80 divisors (see below), whose sum is σ = 3102853644000. Its totient is φ = 494408208000.

The previous prime is 1280164254997. The next prime is 1280164255021. The reversal of 1280164255000 is 5524610821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 4269360 + ... + 4559359.

It is an arithmetic number, because the mean of its divisors is an integer number (38785670550).

Almost surely, 2^{1280164255000} is an apocalyptic number.

1280164255000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280164255000 is an abundant number, since it is smaller than the sum of its proper divisors (1822689389000).

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

1280164255000 is an equidigital number, since it uses as much as digits as its factorization.

1280164255000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828774 (or 8828755 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 1280164255000 its reverse (5524610821), we get a palindrome (1285688865821).

The spelling of 1280164255000 in words is "one trillion, two hundred eighty billion, one hundred sixty-four million, two hundred fifty-five thousand".