8480451868981 has 2 divisors, whose sum is σ = 8480451868982. Its totient is φ = 8480451868980.

The previous prime is 8480451868919. The next prime is 8480451869017. The reversal of 8480451868981 is 1898681540848.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8350394987025 + 130056881956 = 2889705^2 + 360634^2 .

It is a cyclic number.

It is not a de Polignac number, because 8480451868981 - 2²³ = 8480443480373 is a prime.

It is a super-2 number, since 2×8480451868981² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8480451868981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8480451868901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4240225934490 + 4240225934491.

It is an arithmetic number, because the mean of its divisors is an integer number (4240225934491).

Almost surely, 2^{8480451868981} is an apocalyptic number.

It is an amenable number.

8480451868981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8480451868981 is an equidigital number, since it uses as much as digits as its factorization.

8480451868981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141557760, while the sum is 70.

The spelling of 8480451868981 in words is "eight trillion, four hundred eighty billion, four hundred fifty-one million, eight hundred sixty-eight thousand, nine hundred eighty-one".