276374438381 has 2 divisors, whose sum is σ = 276374438382. Its totient is φ = 276374438380.

The previous prime is 276374438369. The next prime is 276374438383. The reversal of 276374438381 is 183834473672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267532045225 + 8842393156 = 517235^2 + 94034^2 .

It is a cyclic number.

It is not a de Polignac number, because 276374438381 - 2¹⁰ = 276374437357 is a prime.

It is a super-3 number, since 3×276374438381³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 276374438383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276374438383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138187219190 + 138187219191.

It is an arithmetic number, because the mean of its divisors is an integer number (138187219191).

Almost surely, 2^276374438381 is an apocalyptic number.

It is an amenable number.

276374438381 is a deficient number, since it is larger than the sum of its proper divisors (1).

276374438381 is an equidigital number, since it uses as much as digits as its factorization.

276374438381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 56.

The spelling of 276374438381 in words is "two hundred seventy-six billion, three hundred seventy-four million, four hundred thirty-eight thousand, three hundred eighty-one".