505050415050551 has 4 divisors (see below), whose sum is σ = 517368717856704. Its totient is φ = 492732112244400.

The previous prime is 505050415050457. The next prime is 505050415050553. The reversal of 505050415050551 is 155050514050505.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505050415050551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 12318302806111 = 505050415050551 / (5 + 0 + 5 + 0 + 5 + 0 + 4 + 1 + 5 + 0 + 5 + 0 + 5 + 5 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505050415050499 and 505050415050508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505050415050553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6159151403015 + ... + 6159151403096.

It is an arithmetic number, because the mean of its divisors is an integer number (129342179464176).

Almost surely, 2^{505050415050551} is an apocalyptic number.

505050415050551 is a deficient number, since it is larger than the sum of its proper divisors (12318302806153).

505050415050551 is a wasteful number, since it uses less digits than its factorization.

505050415050551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318302806152.

The product of its (nonzero) digits is 312500, while the sum is 41.

The spelling of 505050415050551 in words is "five hundred five trillion, fifty billion, four hundred fifteen million, fifty thousand, five hundred fifty-one".