15534974473 has 2 divisors, whose sum is σ = 15534974474. Its totient is φ = 15534974472.

The previous prime is 15534974471. The next prime is 15534974537. The reversal of 15534974473 is 37447943551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15219663424 + 315311049 = 123368^2 + 17757^2 .

It is a cyclic number.

It is not a de Polignac number, because 15534974473 - 2¹ = 15534974471 is a prime.

Together with 15534974471, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 15534974473.

It is not a weakly prime, because it can be changed into another prime (15534974471) 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, 7767487236 + 7767487237.

It is an arithmetic number, because the mean of its divisors is an integer number (7767487237).

Almost surely, 2^15534974473 is an apocalyptic number.

It is an amenable number.

15534974473 is a deficient number, since it is larger than the sum of its proper divisors (1).

15534974473 is an equidigital number, since it uses as much as digits as its factorization.

15534974473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 52.

The spelling of 15534974473 in words is "fifteen billion, five hundred thirty-four million, nine hundred seventy-four thousand, four hundred seventy-three".