267625821870493 has 2 divisors, whose sum is σ = 267625821870494. Its totient is φ = 267625821870492.

The previous prime is 267625821870461. The next prime is 267625821870529. The reversal of 267625821870493 is 394078128526762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264542840741529 + 3082981128964 = 16264773^2 + 1755842^2 .

It is a cyclic number.

It is not a de Polignac number, because 267625821870493 - 2⁵ = 267625821870461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (267625821810493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133812910935246 + 133812910935247.

It is an arithmetic number, because the mean of its divisors is an integer number (133812910935247).

It is a 2-persistent number, because it is pandigital, and so is 2⋅267625821870493 = 535251643740986, but 3⋅267625821870493 = 802877465611479 is not.

Almost surely, 2^{267625821870493} is an apocalyptic number.

It is an amenable number.

267625821870493 is a deficient number, since it is larger than the sum of its proper divisors (1).

267625821870493 is an equidigital number, since it uses as much as digits as its factorization.

267625821870493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 487710720, while the sum is 70.

The spelling of 267625821870493 in words is "two hundred sixty-seven trillion, six hundred twenty-five billion, eight hundred twenty-one million, eight hundred seventy thousand, four hundred ninety-three".