15345043543 has 2 divisors, whose sum is σ = 15345043544. Its totient is φ = 15345043542.

The previous prime is 15345043459. The next prime is 15345043573. The reversal of 15345043543 is 34534054351.

It is a strong prime.

It is an emirp because it is prime and its reverse (34534054351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15345043543 is a prime.

It is a super-2 number, since 2×15345043543² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15345043573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7672521771 + 7672521772.

It is an arithmetic number, because the mean of its divisors is an integer number (7672521772).

Almost surely, 2^15345043543 is an apocalyptic number.

15345043543 is a deficient number, since it is larger than the sum of its proper divisors (1).

15345043543 is an equidigital number, since it uses as much as digits as its factorization.

15345043543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 15345043543 its reverse (34534054351), we get a palindrome (49879097894).

The spelling of 15345043543 in words is "fifteen billion, three hundred forty-five million, forty-three thousand, five hundred forty-three".