12777751512764 has 36 divisors (see below), whose sum is σ = 26198986970520. Its totient is φ = 5436782235360.

The previous prime is 12777751512763. The next prime is 12777751512811. The reversal of 12777751512764 is 46721515777721.

It is a junction number, because it is equal to n+sod(n) for n = 12777751512697 and 12777751512706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12777751512763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234478547 + ... + 234533034.

It is an arithmetic number, because the mean of its divisors is an integer number (727749638070).

Almost surely, 2^{12777751512764} is an apocalyptic number.

12777751512764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12777751512764 is an abundant number, since it is smaller than the sum of its proper divisors (13421235457756).

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

12777751512764 is a wasteful number, since it uses less digits than its factorization.

12777751512764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469011738 (or 469011729 counting only the distinct ones).

The product of its digits is 40336800, while the sum is 62.

The spelling of 12777751512764 in words is "twelve trillion, seven hundred seventy-seven billion, seven hundred fifty-one million, five hundred twelve thousand, seven hundred sixty-four".