1280365679052 has 36 divisors (see below), whose sum is σ = 3356349539816. Its totient is φ = 426788559360.

The previous prime is 1280365679051. The next prime is 1280365679083. The reversal of 1280365679052 is 2509765630821.

1280365679052 is a `hidden beast` number, since 1 + 28 + 0 + 3 + 6 + 567 + 9 + 0 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-5 number, since 5×1280365679052⁵ (a number of 62 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1280365679052.

It is not an unprimeable number, because it can be changed into a prime (1280365679051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658623349 + ... + 658625292.

Almost surely, 2^{1280365679052} is an apocalyptic number.

1280365679052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1280365679052 is an abundant number, since it is smaller than the sum of its proper divisors (2075983860764).

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

1280365679052 is a wasteful number, since it uses less digits than its factorization.

1280365679052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317248660 (or 1317248646 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 1280365679052 in words is "one trillion, two hundred eighty billion, three hundred sixty-five million, six hundred seventy-nine thousand, fifty-two".