12016777277 has 2 divisors, whose sum is σ = 12016777278. Its totient is φ = 12016777276.

The previous prime is 12016777273. The next prime is 12016777303. The reversal of 12016777277 is 77277761021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6621727876 + 5395049401 = 81374^2 + 73451^2 .

It is a cyclic number.

It is not a de Polignac number, because 12016777277 - 2² = 12016777273 is a prime.

It is a super-2 number, since 2×12016777277² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12016777273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6008388638 + 6008388639.

It is an arithmetic number, because the mean of its divisors is an integer number (6008388639).

Almost surely, 2^12016777277 is an apocalyptic number.

It is an amenable number.

12016777277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12016777277 is an equidigital number, since it uses as much as digits as its factorization.

12016777277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403368, while the sum is 47.

The spelling of 12016777277 in words is "twelve billion, sixteen million, seven hundred seventy-seven thousand, two hundred seventy-seven".