4816801199981 has 2 divisors, whose sum is σ = 4816801199982. Its totient is φ = 4816801199980.

The previous prime is 4816801199957. The next prime is 4816801200077. The reversal of 4816801199981 is 1899911086184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4741793684356 + 75007515625 = 2177566^2 + 273875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4816801199981 is a prime.

It is a super-2 number, since 2×4816801199981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4816801199681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2408400599990 + 2408400599991.

It is an arithmetic number, because the mean of its divisors is an integer number (2408400599991).

Almost surely, 2^{4816801199981} is an apocalyptic number.

It is an amenable number.

4816801199981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4816801199981 is an equidigital number, since it uses as much as digits as its factorization.

4816801199981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 65.

The spelling of 4816801199981 in words is "four trillion, eight hundred sixteen billion, eight hundred one million, one hundred ninety-nine thousand, nine hundred eighty-one".