147449671661 has 2 divisors, whose sum is σ = 147449671662. Its totient is φ = 147449671660.

The previous prime is 147449671609. The next prime is 147449671709. The reversal of 147449671661 is 166176944741.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139181224900 + 8268446761 = 373070^2 + 90931^2 .

It is an emirp because it is prime and its reverse (166176944741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147449671661 is a prime.

It is a super-3 number, since 3×147449671661³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 147449671597 and 147449671606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147449670661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73724835830 + 73724835831.

It is an arithmetic number, because the mean of its divisors is an integer number (73724835831).

Almost surely, 2^147449671661 is an apocalyptic number.

It is an amenable number.

147449671661 is a deficient number, since it is larger than the sum of its proper divisors (1).

147449671661 is an equidigital number, since it uses as much as digits as its factorization.

147449671661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 56.

The spelling of 147449671661 in words is "one hundred forty-seven billion, four hundred forty-nine million, six hundred seventy-one thousand, six hundred sixty-one".