12777011064 has 64 divisors (see below), whose sum is σ = 35535110400. Its totient is φ = 4253794272.

The previous prime is 12777011063. The next prime is 12777011173. The reversal of 12777011064 is 46011077721.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12777011063) 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, 142869 + ... + 214395.

It is an arithmetic number, because the mean of its divisors is an integer number (555236100).

Almost surely, 2^12777011064 is an apocalyptic number.

It is an amenable number.

12777011064 is an abundant number, since it is smaller than the sum of its proper divisors (22758099336).

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

12777011064 is a wasteful number, since it uses less digits than its factorization.

12777011064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72369 (or 72359 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 36.

Adding to 12777011064 its reverse (46011077721), we get a palindrome (58788088785).

The spelling of 12777011064 in words is "twelve billion, seven hundred seventy-seven million, eleven thousand, sixty-four".