267261431273 has 2 divisors, whose sum is σ = 267261431274. Its totient is φ = 267261431272.

The previous prime is 267261431263. The next prime is 267261431293. The reversal of 267261431273 is 372134162762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228840727129 + 38420704144 = 478373^2 + 196012^2 .

It is a cyclic number.

It is not a de Polignac number, because 267261431273 - 2¹⁶ = 267261365737 is a prime.

It is not a weakly prime, because it can be changed into another prime (267261431243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133630715636 + 133630715637.

It is an arithmetic number, because the mean of its divisors is an integer number (133630715637).

Almost surely, 2^267261431273 is an apocalyptic number.

It is an amenable number.

267261431273 is a deficient number, since it is larger than the sum of its proper divisors (1).

267261431273 is an equidigital number, since it uses as much as digits as its factorization.

267261431273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 44.

The spelling of 267261431273 in words is "two hundred sixty-seven billion, two hundred sixty-one million, four hundred thirty-one thousand, two hundred seventy-three".