15450543545 has 8 divisors (see below), whose sum is σ = 18599142024. Its totient is φ = 12321441664.

The previous prime is 15450543497. The next prime is 15450543571. The reversal of 15450543545 is 54534505451.

It can be written as a sum of positive squares in 4 ways, for example, as 513792889 + 14936750656 = 22667^2 + 122216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15450543545 - 2⁸ = 15450543289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4872404 + ... + 4875573.

It is an arithmetic number, because the mean of its divisors is an integer number (2324892753).

Almost surely, 2^15450543545 is an apocalyptic number.

It is an amenable number.

15450543545 is a deficient number, since it is larger than the sum of its proper divisors (3148598479).

15450543545 is an equidigital number, since it uses as much as digits as its factorization.

15450543545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748299.

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 15450543545 in words is "fifteen billion, four hundred fifty million, five hundred forty-three thousand, five hundred forty-five".