276342508891 has 4 divisors (see below), whose sum is σ = 276354982872. Its totient is φ = 276330034912.

The previous prime is 276342508879. The next prime is 276342508919. The reversal of 276342508891 is 198805243672.

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

It is a cyclic number.

It is not a de Polignac number, because 276342508891 - 2²⁵ = 276308954459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276342508861) 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 in 3 ways as a sum of consecutive naturals, for example, 6203701 + ... + 6248086.

It is an arithmetic number, because the mean of its divisors is an integer number (69088745718).

It is a 1-persistent number, because it is pandigital, but 2⋅276342508891 = 552685017782 is not.

Almost surely, 2^276342508891 is an apocalyptic number.

276342508891 is a deficient number, since it is larger than the sum of its proper divisors (12473981).

276342508891 is a wasteful number, since it uses less digits than its factorization.

276342508891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473980.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 276342508891 in words is "two hundred seventy-six billion, three hundred forty-two million, five hundred eight thousand, eight hundred ninety-one".