463845506981 has 2 divisors, whose sum is σ = 463845506982. Its totient is φ = 463845506980.

The previous prime is 463845506977. The next prime is 463845506989. The reversal of 463845506981 is 189605548364.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386553166756 + 77292340225 = 621734^2 + 278015^2 .

It is a cyclic number.

It is not a de Polignac number, because 463845506981 - 2² = 463845506977 is a prime.

It is a super-2 number, since 2×463845506981² (a number of 24 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 463845506981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (463845506989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 231922753490 + 231922753491.

It is an arithmetic number, because the mean of its divisors is an integer number (231922753491).

Almost surely, 2^463845506981 is an apocalyptic number.

It is an amenable number.

463845506981 is a deficient number, since it is larger than the sum of its proper divisors (1).

463845506981 is an equidigital number, since it uses as much as digits as its factorization.

463845506981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 463845506981 in words is "four hundred sixty-three billion, eight hundred forty-five million, five hundred six thousand, nine hundred eighty-one".