1273887780004 has 72 divisors (see below), whose sum is σ = 2603962277952. Its totient is φ = 543703285440.

The previous prime is 1273887780001. The next prime is 1273887780017. The reversal of 1273887780004 is 4000877883721.

It is not an unprimeable number, because it can be changed into a prime (1273887780001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133933609 + ... + 133943119.

Almost surely, 2^{1273887780004} is an apocalyptic number.

1273887780004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273887780004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301981138976).

1273887780004 is an abundant number, since it is smaller than the sum of its proper divisors (1330074497948).

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

1273887780004 is a wasteful number, since it uses less digits than its factorization.

1273887780004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12273 (or 12264 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 55.

The spelling of 1273887780004 in words is "one trillion, two hundred seventy-three billion, eight hundred eighty-seven million, seven hundred eighty thousand, four".