15243882553 has 2 divisors, whose sum is σ = 15243882554. Its totient is φ = 15243882552.

The previous prime is 15243882551. The next prime is 15243882583. The reversal of 15243882553 is 35528834251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15110063929 + 133818624 = 122923^2 + 11568^2 .

It is an emirp because it is prime and its reverse (35528834251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15243882553 - 2¹ = 15243882551 is a prime.

Together with 15243882551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15243882551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7621941276 + 7621941277.

It is an arithmetic number, because the mean of its divisors is an integer number (7621941277).

Almost surely, 2^15243882553 is an apocalyptic number.

It is an amenable number.

15243882553 is a deficient number, since it is larger than the sum of its proper divisors (1).

15243882553 is an equidigital number, since it uses as much as digits as its factorization.

15243882553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152000, while the sum is 46.

The spelling of 15243882553 in words is "fifteen billion, two hundred forty-three million, eight hundred eighty-two thousand, five hundred fifty-three".