551782238811 has 4 divisors (see below), whose sum is σ = 735709651752. Its totient is φ = 367854825872.

The previous prime is 551782238809. The next prime is 551782238927. The reversal of 551782238811 is 118832287155.

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 551782238811 - 2¹ = 551782238809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551782238011) 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 3 ways as a sum of consecutive naturals, for example, 91963706466 + ... + 91963706471.

It is an arithmetic number, because the mean of its divisors is an integer number (183927412938).

Almost surely, 2^551782238811 is an apocalyptic number.

551782238811 is a deficient number, since it is larger than the sum of its proper divisors (183927412941).

551782238811 is a wasteful number, since it uses less digits than its factorization.

551782238811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183927412940.

The product of its digits is 1075200, while the sum is 51.

The spelling of 551782238811 in words is "five hundred fifty-one billion, seven hundred eighty-two million, two hundred thirty-eight thousand, eight hundred eleven".