276367872721 has 4 divisors (see below), whose sum is σ = 276579975232. Its totient is φ = 276155770212.

The previous prime is 276367872707. The next prime is 276367872727. The reversal of 276367872721 is 127278763672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 276367872721 - 2⁵ = 276367872689 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276367872727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106049301 + ... + 106051906.

It is an arithmetic number, because the mean of its divisors is an integer number (69144993808).

Almost surely, 2^276367872721 is an apocalyptic number.

It is an amenable number.

276367872721 is a deficient number, since it is larger than the sum of its proper divisors (212102511).

276367872721 is a wasteful number, since it uses less digits than its factorization.

276367872721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212102510.

The product of its digits is 16595712, while the sum is 58.

The spelling of 276367872721 in words is "two hundred seventy-six billion, three hundred sixty-seven million, eight hundred seventy-two thousand, seven hundred twenty-one".