15135554543 has 2 divisors, whose sum is σ = 15135554544. Its totient is φ = 15135554542.

The previous prime is 15135554519. The next prime is 15135554549. The reversal of 15135554543 is 34545553151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15135554543 - 2²⁴ = 15118777327 is a prime.

It is a super-3 number, since 3×15135554543³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 15135554543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15135554549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567777271 + 7567777272.

It is an arithmetic number, because the mean of its divisors is an integer number (7567777272).

Almost surely, 2^15135554543 is an apocalyptic number.

15135554543 is a deficient number, since it is larger than the sum of its proper divisors (1).

15135554543 is an equidigital number, since it uses as much as digits as its factorization.

15135554543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450000, while the sum is 41.

The spelling of 15135554543 in words is "fifteen billion, one hundred thirty-five million, five hundred fifty-four thousand, five hundred forty-three".