499680041681 has 2 divisors, whose sum is σ = 499680041682. Its totient is φ = 499680041680.

The previous prime is 499680041671. The next prime is 499680041689. The reversal of 499680041681 is 186140086994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499679334400 + 707281 = 706880^2 + 841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499680041681 is a prime.

It is a super-2 number, since 2×499680041681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (499680041689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249840020840 + 249840020841.

It is an arithmetic number, because the mean of its divisors is an integer number (249840020841).

Almost surely, 2^499680041681 is an apocalyptic number.

It is an amenable number.

499680041681 is a deficient number, since it is larger than the sum of its proper divisors (1).

499680041681 is an equidigital number, since it uses as much as digits as its factorization.

499680041681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 499680041681 in words is "four hundred ninety-nine billion, six hundred eighty million, forty-one thousand, six hundred eighty-one".