277779380113 has 4 divisors (see below), whose sum is σ = 277886509348. Its totient is φ = 277672250880.

The previous prime is 277779380057. The next prime is 277779380143. The reversal of 277779380113 is 311083977772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108552457729 + 169226922384 = 329473^2 + 411372^2 .

It is a cyclic number.

It is not a de Polignac number, because 277779380113 - 2³³ = 269189445521 is a prime.

It is a super-3 number, since 3×277779380113³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (277779380143) 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, 53560728 + ... + 53565913.

It is an arithmetic number, because the mean of its divisors is an integer number (69471627337).

Almost surely, 2^277779380113 is an apocalyptic number.

It is an amenable number.

277779380113 is a deficient number, since it is larger than the sum of its proper divisors (107129235).

277779380113 is a wasteful number, since it uses less digits than its factorization.

277779380113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107129234.

The product of its (nonzero) digits is 3111696, while the sum is 55.

The spelling of 277779380113 in words is "two hundred seventy-seven billion, seven hundred seventy-nine million, three hundred eighty thousand, one hundred thirteen".