1276208566140 has 48 divisors (see below), whose sum is σ = 3656485945728. Its totient is φ = 332407811904.

The previous prime is 1276208566123. The next prime is 1276208566163. The reversal of 1276208566140 is 416658026721.

It is a super-2 number, since 2×1276208566140² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1276208566140.

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, 247324662 + ... + 247329821.

It is an arithmetic number, because the mean of its divisors is an integer number (76176790536).

Almost surely, 2^{1276208566140} is an apocalyptic number.

1276208566140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1276208566140 is an abundant number, since it is smaller than the sum of its proper divisors (2380277379588).

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

1276208566140 is a wasteful number, since it uses less digits than its factorization.

1276208566140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494654538 (or 494654536 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 1276208566140 in words is "one trillion, two hundred seventy-six billion, two hundred eight million, five hundred sixty-six thousand, one hundred forty".