734034661561 has 2 divisors, whose sum is σ = 734034661562. Its totient is φ = 734034661560.

The previous prime is 734034661559. The next prime is 734034661583. The reversal of 734034661561 is 165166430437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426696368400 + 307338293161 = 653220^2 + 554381^2 .

It is a cyclic number.

It is not a de Polignac number, because 734034661561 - 2¹ = 734034661559 is a prime.

Together with 734034661559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (734034661361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367017330780 + 367017330781.

It is an arithmetic number, because the mean of its divisors is an integer number (367017330781).

Almost surely, 2^734034661561 is an apocalyptic number.

It is an amenable number.

734034661561 is a deficient number, since it is larger than the sum of its proper divisors (1).

734034661561 is an equidigital number, since it uses as much as digits as its factorization.

734034661561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 734034661561 in words is "seven hundred thirty-four billion, thirty-four million, six hundred sixty-one thousand, five hundred sixty-one".