2005500156603 has 4 divisors (see below), whose sum is σ = 2674000208808. Its totient is φ = 1337000104400.

The previous prime is 2005500156551. The next prime is 2005500156607. The reversal of 2005500156603 is 3066510055002.

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 2005500156603 - 2⁸ = 2005500156347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005500156607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334250026098 + ... + 334250026103.

It is an arithmetic number, because the mean of its divisors is an integer number (668500052202).

Almost surely, 2^{2005500156603} is an apocalyptic number.

2005500156603 is a deficient number, since it is larger than the sum of its proper divisors (668500052205).

2005500156603 is an equidigital number, since it uses as much as digits as its factorization.

2005500156603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668500052204.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 2005500156603 in words is "two trillion, five billion, five hundred million, one hundred fifty-six thousand, six hundred three".