276634620474221 has 4 divisors (see below), whose sum is σ = 281323342855200. Its totient is φ = 271945898093244.

The previous prime is 276634620474193. The next prime is 276634620474227. The reversal of 276634620474221 is 122474026436672.

It is a happy number.

276634620474221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 276634620474221 - 2⁴² = 272236573963117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276634620474227) 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, 2344361190401 + ... + 2344361190518.

It is an arithmetic number, because the mean of its divisors is an integer number (70330835713800).

Almost surely, 2^{276634620474221} is an apocalyptic number.

It is an amenable number.

276634620474221 is a deficient number, since it is larger than the sum of its proper divisors (4688722380979).

276634620474221 is an equidigital number, since it uses as much as digits as its factorization.

276634620474221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688722380978.

The product of its (nonzero) digits is 32514048, while the sum is 56.

The spelling of 276634620474221 in words is "two hundred seventy-six trillion, six hundred thirty-four billion, six hundred twenty million, four hundred seventy-four thousand, two hundred twenty-one".