15543214145 has 4 divisors (see below), whose sum is σ = 18651856980. Its totient is φ = 12434571312.

The previous prime is 15543214133. The next prime is 15543214241. The reversal of 15543214145 is 54141234551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11852894641 + 3690319504 = 108871^2 + 60748^2 .

It is a cyclic number.

It is not a de Polignac number, because 15543214145 - 2¹⁰ = 15543213121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554321410 + ... + 1554321419.

It is an arithmetic number, because the mean of its divisors is an integer number (4662964245).

Almost surely, 2^15543214145 is an apocalyptic number.

It is an amenable number.

15543214145 is a deficient number, since it is larger than the sum of its proper divisors (3108642835).

15543214145 is an equidigital number, since it uses as much as digits as its factorization.

15543214145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108642834.

The product of its digits is 48000, while the sum is 35.

Adding to 15543214145 its reverse (54141234551), we get a palindrome (69684448696).

The spelling of 15543214145 in words is "fifteen billion, five hundred forty-three million, two hundred fourteen thousand, one hundred forty-five".