500964554681 has 2 divisors, whose sum is σ = 500964554682. Its totient is φ = 500964554680.

The previous prime is 500964554653. The next prime is 500964554707. The reversal of 500964554681 is 186455469005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281621262400 + 219343292281 = 530680^2 + 468341^2 .

It is a cyclic number.

It is not a de Polignac number, because 500964554681 - 2¹⁰ = 500964553657 is a prime.

It is a super-2 number, since 2×500964554681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (500964554381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250482277340 + 250482277341.

It is an arithmetic number, because the mean of its divisors is an integer number (250482277341).

Almost surely, 2^500964554681 is an apocalyptic number.

It is an amenable number.

500964554681 is a deficient number, since it is larger than the sum of its proper divisors (1).

500964554681 is an equidigital number, since it uses as much as digits as its factorization.

500964554681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 500964554681 in words is "five hundred billion, nine hundred sixty-four million, five hundred fifty-four thousand, six hundred eighty-one".