267921147321 has 27 divisors (see below), whose sum is σ = 395514127333. Its totient is φ = 174766178040.

The previous prime is 267921147287. The next prime is 267921147331. The reversal of 267921147321 is 123741129762.

The square root of 267921147321 is 517611.

It is a perfect power (a square), and thus also a powerful number.

267921147321 is a `hidden beast` number, since 2 + 6 + 79 + 211 + 47 + 321 = 666.

267921147321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 267921147321 - 2¹⁷ = 267921016249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (267921147331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 72981316 + ... + 72984986.

Almost surely, 2^267921147321 is an apocalyptic number.

267921147321 is the 517611-st square number.

267921147321 is the 258806-th centered octagonal number.

It is an amenable number.

267921147321 is a deficient number, since it is larger than the sum of its proper divisors (127592980012).

267921147321 is an frugal number, since it uses more digits than its factorization.

267921147321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7442 (or 3721 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The spelling of 267921147321 in words is "two hundred sixty-seven billion, nine hundred twenty-one million, one hundred forty-seven thousand, three hundred twenty-one".