277117123812 has 12 divisors (see below), whose sum is σ = 646606622256. Its totient is φ = 92372374600.

The previous prime is 277117123769. The next prime is 277117123813. The reversal of 277117123812 is 218321711772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×277117123812² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (277117123813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11546546814 + ... + 11546546837.

It is an arithmetic number, because the mean of its divisors is an integer number (53883885188).

Almost surely, 2^277117123812 is an apocalyptic number.

It is an amenable number.

277117123812 is an abundant number, since it is smaller than the sum of its proper divisors (369489498444).

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

277117123812 is a wasteful number, since it uses less digits than its factorization.

277117123812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23093093658 (or 23093093656 counting only the distinct ones).

The product of its digits is 65856, while the sum is 42.

The spelling of 277117123812 in words is "two hundred seventy-seven billion, one hundred seventeen million, one hundred twenty-three thousand, eight hundred twelve".