163481999969 has 2 divisors, whose sum is σ = 163481999970. Its totient is φ = 163481999968.

The previous prime is 163481999957. The next prime is 163481999981. The reversal of 163481999969 is 969999184361.

It is a balanced prime because it is at equal distance from previous prime (163481999957) and next prime (163481999981).

It can be written as a sum of positive squares in only one way, i.e., 129409270225 + 34072729744 = 359735^2 + 184588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163481999969 is a prime.

It is a super-2 number, since 2×163481999969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163481999896 and 163481999905.

It is not a weakly prime, because it can be changed into another prime (163481992969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81740999984 + 81740999985.

It is an arithmetic number, because the mean of its divisors is an integer number (81740999985).

Almost surely, 2^163481999969 is an apocalyptic number.

It is an amenable number.

163481999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

163481999969 is an equidigital number, since it uses as much as digits as its factorization.

163481999969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204073344, while the sum is 74.

The spelling of 163481999969 in words is "one hundred sixty-three billion, four hundred eighty-one million, nine hundred ninety-nine thousand, nine hundred sixty-nine".