267261328321 has 16 divisors (see below), whose sum is σ = 288384788160. Its totient is φ = 246219030720.

The previous prime is 267261328309. The next prime is 267261328349. The reversal of 267261328321 is 123823162762.

It is not a de Polignac number, because 267261328321 - 2³⁵ = 232901589953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (267261328361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15732210 + ... + 15749188.

It is an arithmetic number, because the mean of its divisors is an integer number (18024049260).

Almost surely, 2^267261328321 is an apocalyptic number.

It is an amenable number.

267261328321 is a deficient number, since it is larger than the sum of its proper divisors (21123459839).

267261328321 is a wasteful number, since it uses less digits than its factorization.

267261328321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19296.

The product of its digits is 290304, while the sum is 43.

The spelling of 267261328321 in words is "two hundred sixty-seven billion, two hundred sixty-one million, three hundred twenty-eight thousand, three hundred twenty-one".