15343554661 has 2 divisors, whose sum is σ = 15343554662. Its totient is φ = 15343554660.

The previous prime is 15343554553. The next prime is 15343554727. The reversal of 15343554661 is 16645534351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15190562500 + 152992161 = 123250^2 + 12369^2 .

It is a cyclic number.

It is not a de Polignac number, because 15343554661 - 2¹¹ = 15343552613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15343554461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7671777330 + 7671777331.

It is an arithmetic number, because the mean of its divisors is an integer number (7671777331).

Almost surely, 2^15343554661 is an apocalyptic number.

It is an amenable number.

15343554661 is a deficient number, since it is larger than the sum of its proper divisors (1).

15343554661 is an equidigital number, since it uses as much as digits as its factorization.

15343554661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 43.

The spelling of 15343554661 in words is "fifteen billion, three hundred forty-three million, five hundred fifty-four thousand, six hundred sixty-one".