12016641545 has 8 divisors (see below), whose sum is σ = 14420588424. Its totient is φ = 9612900864.

The previous prime is 12016641541. The next prime is 12016641551. The reversal of 12016641545 is 54514661021.

12016641545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1467502864 + 10549138681 = 38308^2 + 102709^2 .

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 12016641545 - 2² = 12016641541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12016641541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144347 + ... + 211823.

It is an arithmetic number, because the mean of its divisors is an integer number (1802573553).

Almost surely, 2^12016641545 is an apocalyptic number.

It is an amenable number.

12016641545 is a deficient number, since it is larger than the sum of its proper divisors (2403946879).

12016641545 is an equidigital number, since it uses as much as digits as its factorization.

12016641545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103099.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 12016641545 in words is "twelve billion, sixteen million, six hundred forty-one thousand, five hundred forty-five".