1280180367856 has 40 divisors (see below), whose sum is σ = 2690362510640. Its totient is φ = 586601726976.

The previous prime is 1280180367841. The next prime is 1280180367877. The reversal of 1280180367856 is 6587630810821.

It is a junction number, because it is equal to n+sod(n) for n = 1280180367797 and 1280180367806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22110345 + ... + 22168168.

It is an arithmetic number, because the mean of its divisors is an integer number (67259062766).

Almost surely, 2^{1280180367856} is an apocalyptic number.

1280180367856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1280180367856 is an abundant number, since it is smaller than the sum of its proper divisors (1410182142784).

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

1280180367856 is a wasteful number, since it uses less digits than its factorization.

1280180367856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44278673 (or 44278667 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 1280180367856 in words is "one trillion, two hundred eighty billion, one hundred eighty million, three hundred sixty-seven thousand, eight hundred fifty-six".