12906777890 has 16 divisors (see below), whose sum is σ = 23240539008. Its totient is φ = 5160858096.

The previous prime is 12906777857. The next prime is 12906777899. The reversal of 12906777890 is 9877760921.

It is not an unprimeable number, because it can be changed into a prime (12906777899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202202 + ... + 258261.

It is an arithmetic number, because the mean of its divisors is an integer number (1452533688).

Almost surely, 2^12906777890 is an apocalyptic number.

12906777890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12906777890 is a deficient number, since it is larger than the sum of its proper divisors (10333761118).

12906777890 is a wasteful number, since it uses less digits than its factorization.

12906777890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463273.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The spelling of 12906777890 in words is "twelve billion, nine hundred six million, seven hundred seventy-seven thousand, eight hundred ninety".