254534775493 has 2 divisors, whose sum is σ = 254534775494. Its totient is φ = 254534775492.

The previous prime is 254534775491. The next prime is 254534775629. The reversal of 254534775493 is 394577435452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163117438884 + 91417336609 = 403878^2 + 302353^2 .

It is a cyclic number.

It is not a de Polignac number, because 254534775493 - 2¹ = 254534775491 is a prime.

Together with 254534775491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254534775491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127267387746 + 127267387747.

It is an arithmetic number, because the mean of its divisors is an integer number (127267387747).

Almost surely, 2^254534775493 is an apocalyptic number.

It is an amenable number.

254534775493 is a deficient number, since it is larger than the sum of its proper divisors (1).

254534775493 is an equidigital number, since it uses as much as digits as its factorization.

254534775493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504000, while the sum is 58.

The spelling of 254534775493 in words is "two hundred fifty-four billion, five hundred thirty-four million, seven hundred seventy-five thousand, four hundred ninety-three".