500555005551 has 48 divisors (see below), whose sum is σ = 741950842464. Its totient is φ = 325061597952.

The previous prime is 500555005523. The next prime is 500555005579. The reversal of 500555005551 is 155500555005.

It is a happy number.

500555005551 is a `hidden beast` number, since 5 + 0 + 0 + 5 + 550 + 0 + 55 + 51 = 666.

It is an interprime number because it is at equal distance from previous prime (500555005523) and next prime (500555005579).

It is not a de Polignac number, because 500555005551 - 2¹¹ = 500555003503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500555005591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149551660 + ... + 149555006.

It is an arithmetic number, because the mean of its divisors is an integer number (15457309218).

Almost surely, 2^500555005551 is an apocalyptic number.

500555005551 is a deficient number, since it is larger than the sum of its proper divisors (241395836913).

500555005551 is a wasteful number, since it uses less digits than its factorization.

500555005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560 (or 5557 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 500555005551 in words is "five hundred billion, five hundred fifty-five million, five thousand, five hundred fifty-one".