505555555615 has 16 divisors (see below), whose sum is σ = 700748664480. Its totient is φ = 346048721920.

The previous prime is 505555555517. The next prime is 505555555619. The reversal of 505555555615 is 516555555505.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-505555555615 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555555619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270349630 + ... + 270351499.

It is an arithmetic number, because the mean of its divisors is an integer number (43796791530).

Almost surely, 2^505555555615 is an apocalyptic number.

505555555615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

505555555615 is a deficient number, since it is larger than the sum of its proper divisors (195193108865).

505555555615 is a wasteful number, since it uses less digits than its factorization.

505555555615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540701162.

The product of its (nonzero) digits is 11718750, while the sum is 52.

The spelling of 505555555615 in words is "five hundred five billion, five hundred fifty-five million, five hundred fifty-five thousand, six hundred fifteen".