12776770555 has 24 divisors (see below), whose sum is σ = 16139685744. Its totient is φ = 9706972800.

The previous prime is 12776770543. The next prime is 12776770577. The reversal of 12776770555 is 55507767721.

It is not a de Polignac number, because 12776770555 - 2²¹ = 12774673403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231600 + ... + 281410.

It is an arithmetic number, because the mean of its divisors is an integer number (672486906).

Almost surely, 2^12776770555 is an apocalyptic number.

12776770555 is a deficient number, since it is larger than the sum of its proper divisors (3362915189).

12776770555 is an equidigital number, since it uses as much as digits as its factorization.

12776770555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49935 (or 49906 counting only the distinct ones).

The product of its (nonzero) digits is 3601500, while the sum is 52.

The spelling of 12776770555 in words is "twelve billion, seven hundred seventy-six million, seven hundred seventy thousand, five hundred fifty-five".