34465981981 has 2 divisors, whose sum is σ = 34465981982. Its totient is φ = 34465981980.

The previous prime is 34465981933. The next prime is 34465982003. The reversal of 34465981981 is 18918956443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20410693956 + 14055288025 = 142866^2 + 118555^2 .

It is an emirp because it is prime and its reverse (18918956443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34465981981 - 2²⁷ = 34331764253 is a prime.

It is a super-2 number, since 2×34465981981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34465987981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17232990990 + 17232990991.

It is an arithmetic number, because the mean of its divisors is an integer number (17232990991).

Almost surely, 2^34465981981 is an apocalyptic number.

It is an amenable number.

34465981981 is a deficient number, since it is larger than the sum of its proper divisors (1).

34465981981 is an equidigital number, since it uses as much as digits as its factorization.

34465981981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 58.

The spelling of 34465981981 in words is "thirty-four billion, four hundred sixty-five million, nine hundred eighty-one thousand, nine hundred eighty-one".