551156603203 has 4 divisors (see below), whose sum is σ = 583577579880. Its totient is φ = 518735626528.

The previous prime is 551156603197. The next prime is 551156603273. The reversal of 551156603203 is 302306651155.

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

It is not a de Polignac number, because 551156603203 - 2²⁵ = 551123048771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551156603273) 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, 16210488313 + ... + 16210488346.

It is an arithmetic number, because the mean of its divisors is an integer number (145894394970).

Almost surely, 2^551156603203 is an apocalyptic number.

551156603203 is a deficient number, since it is larger than the sum of its proper divisors (32420976677).

551156603203 is a wasteful number, since it uses less digits than its factorization.

551156603203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32420976676.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 551156603203 in words is "five hundred fifty-one billion, one hundred fifty-six million, six hundred three thousand, two hundred three".