12877776730 has 48 divisors (see below), whose sum is σ = 29038693320. Its totient is φ = 4075602048.

The previous prime is 12877776721. The next prime is 12877776731. The reversal of 12877776730 is 3767777821.

It can be written as a sum of positive squares in 4 ways, for example, as 9359982009 + 3517794721 = 96747^2 + 59311^2 .

It is not an unprimeable number, because it can be changed into a prime (12877776731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004445 + ... + 1017184.

Almost surely, 2^12877776730 is an apocalyptic number.

12877776730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12877776730 is an abundant number, since it is smaller than the sum of its proper divisors (16160916590).

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

12877776730 is a wasteful number, since it uses less digits than its factorization.

12877776730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021663 (or 2021656 counting only the distinct ones).

The product of its (nonzero) digits is 4840416, while the sum is 55.

The spelling of 12877776730 in words is "twelve billion, eight hundred seventy-seven million, seven hundred seventy-six thousand, seven hundred thirty".