1280878060877 has 4 divisors (see below), whose sum is σ = 1348292695680. Its totient is φ = 1213463426076.

The previous prime is 1280878060873. The next prime is 1280878060901. The reversal of 1280878060877 is 7780608780821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1280878060877 - 2² = 1280878060873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280878060873) 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 3 ways as a sum of consecutive naturals, for example, 33707317373 + ... + 33707317410.

It is an arithmetic number, because the mean of its divisors is an integer number (337073173920).

Almost surely, 2^{1280878060877} is an apocalyptic number.

It is an amenable number.

1280878060877 is a deficient number, since it is larger than the sum of its proper divisors (67414634803).

1280878060877 is an equidigital number, since it uses as much as digits as its factorization.

1280878060877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67414634802.

The product of its (nonzero) digits is 16859136, while the sum is 62.

The spelling of 1280878060877 in words is "one trillion, two hundred eighty billion, eight hundred seventy-eight million, sixty thousand, eight hundred seventy-seven".