276886635381 has 12 divisors (see below), whose sum is σ = 400686643500. Its totient is φ = 184249883520.

The previous prime is 276886635379. The next prime is 276886635427. The reversal of 276886635381 is 183536688672.

It is a happy number.

276886635381 is a `hidden beast` number, since 2 + 76 + 88 + 66 + 353 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 200010200625 + 76876434756 = 447225^2 + 277266^2 .

It is not a de Polignac number, because 276886635381 - 2¹ = 276886635379 is a prime.

It is a super-2 number, since 2×276886635381² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276886635301) 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, 28428756 + ... + 28438493.

It is an arithmetic number, because the mean of its divisors is an integer number (33390553625).

Almost surely, 2^276886635381 is an apocalyptic number.

It is an amenable number.

276886635381 is a deficient number, since it is larger than the sum of its proper divisors (123800008119).

276886635381 is a wasteful number, since it uses less digits than its factorization.

276886635381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56867796 (or 56867793 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 276886635381 in words is "two hundred seventy-six billion, eight hundred eighty-six million, six hundred thirty-five thousand, three hundred eighty-one".