505551214051 has 4 divisors (see below), whose sum is σ = 544439768992. Its totient is φ = 466662659112.

The previous prime is 505551213983. The next prime is 505551214079. The reversal of 505551214051 is 150412155505.

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

It is a de Polignac number, because none of the positive numbers 2^k-505551214051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505551213998 and 505551214016.

It is not an unprimeable number, because it can be changed into a prime (505551214951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19444277451 + ... + 19444277476.

It is an arithmetic number, because the mean of its divisors is an integer number (136109942248).

Almost surely, 2^505551214051 is an apocalyptic number.

505551214051 is a deficient number, since it is larger than the sum of its proper divisors (38888554941).

505551214051 is a wasteful number, since it uses less digits than its factorization.

505551214051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38888554940.

The product of its (nonzero) digits is 25000, while the sum is 34.

Adding to 505551214051 its reverse (150412155505), we get a palindrome (655963369556).

The spelling of 505551214051 in words is "five hundred five billion, five hundred fifty-one million, two hundred fourteen thousand, fifty-one".