8171312453 has 2 divisors, whose sum is σ = 8171312454. Its totient is φ = 8171312452.

The previous prime is 8171312437. The next prime is 8171312467. The reversal of 8171312453 is 3542131718.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7117790689 + 1053521764 = 84367^2 + 32458^2 .

It is a cyclic number.

It is not a de Polignac number, because 8171312453 - 2⁴ = 8171312437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8171312473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4085656226 + 4085656227.

It is an arithmetic number, because the mean of its divisors is an integer number (4085656227).

Almost surely, 2^8171312453 is an apocalyptic number.

It is an amenable number.

8171312453 is a deficient number, since it is larger than the sum of its proper divisors (1).

8171312453 is an equidigital number, since it uses as much as digits as its factorization.

8171312453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 8171312453 is about 90395.3121184943. The cubic root of 8171312453 is about 2014.1753303883.

The spelling of 8171312453 in words is "eight billion, one hundred seventy-one million, three hundred twelve thousand, four hundred fifty-three".