147344565881 has 2 divisors, whose sum is σ = 147344565882. Its totient is φ = 147344565880.

The previous prime is 147344565853. The next prime is 147344565899. The reversal of 147344565881 is 188565443741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92954863225 + 54389702656 = 304885^2 + 233216^2 .

It is a cyclic number.

It is not a de Polignac number, because 147344565881 - 2¹⁸ = 147344303737 is a prime.

It is a super-2 number, since 2×147344565881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147344565811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73672282940 + 73672282941.

It is an arithmetic number, because the mean of its divisors is an integer number (73672282941).

Almost surely, 2^147344565881 is an apocalyptic number.

It is an amenable number.

147344565881 is a deficient number, since it is larger than the sum of its proper divisors (1).

147344565881 is an equidigital number, since it uses as much as digits as its factorization.

147344565881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12902400, while the sum is 56.

The spelling of 147344565881 in words is "one hundred forty-seven billion, three hundred forty-four million, five hundred sixty-five thousand, eight hundred eighty-one".