12774722555 has 16 divisors (see below), whose sum is σ = 17526896640. Its totient is φ = 8756171232.

The previous prime is 12774722551. The next prime is 12774722603. The reversal of 12774722555 is 55522747721.

It is a cyclic number.

It is not a de Polignac number, because 12774722555 - 2² = 12774722551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12774722551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11066 + ... + 160224.

It is an arithmetic number, because the mean of its divisors is an integer number (1095431040).

Almost surely, 2^12774722555 is an apocalyptic number.

12774722555 is a deficient number, since it is larger than the sum of its proper divisors (4752174085).

12774722555 is a wasteful number, since it uses less digits than its factorization.

12774722555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151618.

The product of its digits is 1372000, while the sum is 47.

The spelling of 12774722555 in words is "twelve billion, seven hundred seventy-four million, seven hundred twenty-two thousand, five hundred fifty-five".