20147500165603 has 4 divisors (see below), whose sum is σ = 20148254130888. Its totient is φ = 20146746200320.

The previous prime is 20147500165601. The next prime is 20147500165607. The reversal of 20147500165603 is 30656100574102.

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

It is a cyclic number.

It is not a de Polignac number, because 20147500165603 - 2¹ = 20147500165601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20147500165601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376942558 + ... + 376996003.

It is an arithmetic number, because the mean of its divisors is an integer number (5037063532722).

Almost surely, 2^{20147500165603} is an apocalyptic number.

20147500165603 is a deficient number, since it is larger than the sum of its proper divisors (753965285).

20147500165603 is an equidigital number, since it uses as much as digits as its factorization.

20147500165603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753965284.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 20147500165603 in words is "twenty trillion, one hundred forty-seven billion, five hundred million, one hundred sixty-five thousand, six hundred three".