12774121776 has 240 divisors, whose sum is σ = 41288607360. Its totient is φ = 3651747840.

The previous prime is 12774121771. The next prime is 12774121831. The reversal of 12774121776 is 67712147721.

It is not an unprimeable number, because it can be changed into a prime (12774121771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2511556 + ... + 2516636.

It is an arithmetic number, because the mean of its divisors is an integer number (172035864).

Almost surely, 2^12774121776 is an apocalyptic number.

12774121776 is a gapful number since it is divisible by the number (16) 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 12774121776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20644303680).

12774121776 is an abundant number, since it is smaller than the sum of its proper divisors (28514485584).

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

12774121776 is a wasteful number, since it uses less digits than its factorization.

12774121776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204 (or 5195 counting only the distinct ones).

The product of its digits is 230496, while the sum is 45.

The spelling of 12774121776 in words is "twelve billion, seven hundred seventy-four million, one hundred twenty-one thousand, seven hundred seventy-six".