15503453143 has 2 divisors, whose sum is σ = 15503453144. Its totient is φ = 15503453142.

The previous prime is 15503453131. The next prime is 15503453149. The reversal of 15503453143 is 34135430551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15503453143 - 2¹³ = 15503444951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15503453099 and 15503453108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15503453149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7751726571 + 7751726572.

It is an arithmetic number, because the mean of its divisors is an integer number (7751726572).

Almost surely, 2^15503453143 is an apocalyptic number.

15503453143 is a deficient number, since it is larger than the sum of its proper divisors (1).

15503453143 is an equidigital number, since it uses as much as digits as its factorization.

15503453143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 15503453143 its reverse (34135430551), we get a palindrome (49638883694).

The spelling of 15503453143 in words is "fifteen billion, five hundred three million, four hundred fifty-three thousand, one hundred forty-three".